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Finding the Fourth Proportional to 630.18, 944.66 and 424.29

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Solution

The fourth proportional to 630.18, 944.66 and 424.29 is: 636.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.18 : 944.66 = 424.29 : x
  2. Step 2: Convert to fraction form
    630.18/944.66 = 424.29/x
  3. Step 3: Cross multiply
    630.18x = 944.66 × 424.29
  4. Step 4: Simplify right side
    630.18x = 400,809.08
  5. Step 5: Solve for x
    x = 400,809.08/630.18
  6. Step 6: Final answer
    x = 636.02

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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.