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Finding the Fourth Proportional to 951.68, 1,314.24 and 691.08

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Solution

The fourth proportional to 951.68, 1,314.24 and 691.08 is: 954.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.68 : 1,314.24 = 691.08 : x
  2. Step 2: Convert to fraction form
    951.68/1,314.24 = 691.08/x
  3. Step 3: Cross multiply
    951.68x = 1,314.24 × 691.08
  4. Step 4: Simplify right side
    951.68x = 908,244.98
  5. Step 5: Solve for x
    x = 908,244.98/951.68
  6. Step 6: Final answer
    x = 954.36

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1.5x scale

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.