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Finding the Fourth Proportional to 425.29, 636.27 and 322.87

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Solution

The fourth proportional to 425.29, 636.27 and 322.87 is: 483.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.29 : 636.27 = 322.87 : x
  2. Step 2: Convert to fraction form
    425.29/636.27 = 322.87/x
  3. Step 3: Cross multiply
    425.29x = 636.27 × 322.87
  4. Step 4: Simplify right side
    425.29x = 205,432.49
  5. Step 5: Solve for x
    x = 205,432.49/425.29
  6. Step 6: Final answer
    x = 483.04

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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.