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Finding the Fourth Proportional to 964.26, 1,330.50 and 565.86

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Solution

The fourth proportional to 964.26, 1,330.50 and 565.86 is: 780.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.26 : 1,330.50 = 565.86 : x
  2. Step 2: Convert to fraction form
    964.26/1,330.50 = 565.86/x
  3. Step 3: Cross multiply
    964.26x = 1,330.50 × 565.86
  4. Step 4: Simplify right side
    964.26x = 752,876.73
  5. Step 5: Solve for x
    x = 752,876.73/964.26
  6. Step 6: Final answer
    x = 780.78

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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.