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Finding the Fourth Proportional to 951.17, 1,312.67 and 531.54

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Solution

The fourth proportional to 951.17, 1,312.67 and 531.54 is: 733.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.17 : 1,312.67 = 531.54 : x
  2. Step 2: Convert to fraction form
    951.17/1,312.67 = 531.54/x
  3. Step 3: Cross multiply
    951.17x = 1,312.67 × 531.54
  4. Step 4: Simplify right side
    951.17x = 697,736.75
  5. Step 5: Solve for x
    x = 697,736.75/951.17
  6. Step 6: Final answer
    x = 733.56

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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.