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Finding the Fourth Proportional to 683.32, 1,024.98 and 615.28

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Solution

The fourth proportional to 683.32, 1,024.98 and 615.28 is: 922.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.32 : 1,024.98 = 615.28 : x
  2. Step 2: Convert to fraction form
    683.32/1,024.98 = 615.28/x
  3. Step 3: Cross multiply
    683.32x = 1,024.98 × 615.28
  4. Step 4: Simplify right side
    683.32x = 630,649.69
  5. Step 5: Solve for x
    x = 630,649.69/683.32
  6. Step 6: Final answer
    x = 922.92

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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.