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Finding the Fourth Proportional to 742.92, 1,024.10 and 556.13

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Solution

The fourth proportional to 742.92, 1,024.10 and 556.13 is: 766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    742.92 : 1,024.10 = 556.13 : x
  2. Step 2: Convert to fraction form
    742.92/1,024.10 = 556.13/x
  3. Step 3: Cross multiply
    742.92x = 1,024.10 × 556.13
  4. Step 4: Simplify right side
    742.92x = 569,524.83
  5. Step 5: Solve for x
    x = 569,524.83/742.92
  6. Step 6: Final answer
    x = 766.60

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.