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Finding the Fourth Proportional to 951.75, 1,312.20 and 754.92

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Solution

The fourth proportional to 951.75, 1,312.20 and 754.92 is: 1,040.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.75 : 1,312.20 = 754.92 : x
  2. Step 2: Convert to fraction form
    951.75/1,312.20 = 754.92/x
  3. Step 3: Cross multiply
    951.75x = 1,312.20 × 754.92
  4. Step 4: Simplify right side
    951.75x = 990,606.02
  5. Step 5: Solve for x
    x = 990,606.02/951.75
  6. Step 6: Final answer
    x = 1,040.83

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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.