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Finding the Fourth Proportional to 502.19, 752.13 and 422.67

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Solution

The fourth proportional to 502.19, 752.13 and 422.67 is: 633.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.19 : 752.13 = 422.67 : x
  2. Step 2: Convert to fraction form
    502.19/752.13 = 422.67/x
  3. Step 3: Cross multiply
    502.19x = 752.13 × 422.67
  4. Step 4: Simplify right side
    502.19x = 317,901.73
  5. Step 5: Solve for x
    x = 317,901.73/502.19
  6. Step 6: Final answer
    x = 633.04

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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.