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Finding the Fourth Proportional to 951.59, 1,313.17 and 578.58

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Solution

The fourth proportional to 951.59, 1,313.17 and 578.58 is: 798.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.59 : 1,313.17 = 578.58 : x
  2. Step 2: Convert to fraction form
    951.59/1,313.17 = 578.58/x
  3. Step 3: Cross multiply
    951.59x = 1,313.17 × 578.58
  4. Step 4: Simplify right side
    951.59x = 759,773.90
  5. Step 5: Solve for x
    x = 759,773.90/951.59
  6. Step 6: Final answer
    x = 798.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.