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Finding the Fourth Proportional to 547.45, 821.27 and 273.49

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Solution

The fourth proportional to 547.45, 821.27 and 273.49 is: 410.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.45 : 821.27 = 273.49 : x
  2. Step 2: Convert to fraction form
    547.45/821.27 = 273.49/x
  3. Step 3: Cross multiply
    547.45x = 821.27 × 273.49
  4. Step 4: Simplify right side
    547.45x = 224,609.13
  5. Step 5: Solve for x
    x = 224,609.13/547.45
  6. Step 6: Final answer
    x = 410.28

Related Problems

Find fourth proportional to 273.73, 410.64 and 136.75
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.