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Finding the Fourth Proportional to 956.01, 1,319.79 and 742.85

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Solution

The fourth proportional to 956.01, 1,319.79 and 742.85 is: 1,025.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    956.01 : 1,319.79 = 742.85 : x
  2. Step 2: Convert to fraction form
    956.01/1,319.79 = 742.85/x
  3. Step 3: Cross multiply
    956.01x = 1,319.79 × 742.85
  4. Step 4: Simplify right side
    956.01x = 980,402.70
  5. Step 5: Solve for x
    x = 980,402.70/956.01
  6. Step 6: Final answer
    x = 1,025.52

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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.