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Finding the Fourth Proportional to 649.52, 974.38 and 307.52

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Solution

The fourth proportional to 649.52, 974.38 and 307.52 is: 461.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.52 : 974.38 = 307.52 : x
  2. Step 2: Convert to fraction form
    649.52/974.38 = 307.52/x
  3. Step 3: Cross multiply
    649.52x = 974.38 × 307.52
  4. Step 4: Simplify right side
    649.52x = 299,641.34
  5. Step 5: Solve for x
    x = 299,641.34/649.52
  6. Step 6: Final answer
    x = 461.33

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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.