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Finding the Fourth Proportional to 543.96, 815.92 and 133.10

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Solution

The fourth proportional to 543.96, 815.92 and 133.10 is: 199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.96 : 815.92 = 133.10 : x
  2. Step 2: Convert to fraction form
    543.96/815.92 = 133.10/x
  3. Step 3: Cross multiply
    543.96x = 815.92 × 133.10
  4. Step 4: Simplify right side
    543.96x = 108,598.95
  5. Step 5: Solve for x
    x = 108,598.95/543.96
  6. Step 6: Final answer
    x = 199.65

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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.