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Finding the Fourth Proportional to 502.22, 752.72 and 355.74

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Solution

The fourth proportional to 502.22, 752.72 and 355.74 is: 533.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.22 : 752.72 = 355.74 : x
  2. Step 2: Convert to fraction form
    502.22/752.72 = 355.74/x
  3. Step 3: Cross multiply
    502.22x = 752.72 × 355.74
  4. Step 4: Simplify right side
    502.22x = 267,772.61
  5. Step 5: Solve for x
    x = 267,772.61/502.22
  6. Step 6: Final answer
    x = 533.18

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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.