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Finding the Fourth Proportional to 956.92, 1,320.24 and 625.72

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Solution

The fourth proportional to 956.92, 1,320.24 and 625.72 is: 863.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.92 : 1,320.24 = 625.72 : x
  2. Step 2: Convert to fraction form
    956.92/1,320.24 = 625.72/x
  3. Step 3: Cross multiply
    956.92x = 1,320.24 × 625.72
  4. Step 4: Simplify right side
    956.92x = 826,100.57
  5. Step 5: Solve for x
    x = 826,100.57/956.92
  6. Step 6: Final answer
    x = 863.29

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