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Finding the Fourth Proportional to 546.19, 819.34 and 180.98

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Solution

The fourth proportional to 546.19, 819.34 and 180.98 is: 271.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.19 : 819.34 = 180.98 : x
  2. Step 2: Convert to fraction form
    546.19/819.34 = 180.98/x
  3. Step 3: Cross multiply
    546.19x = 819.34 × 180.98
  4. Step 4: Simplify right side
    546.19x = 148,287.79
  5. Step 5: Solve for x
    x = 148,287.79/546.19
  6. Step 6: Final answer
    x = 271.49

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Find fourth proportional to 273.10, 409.67 and 90.49
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.