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Finding the Fourth Proportional to 958.92, 1,323.06 and 565.80

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Solution

The fourth proportional to 958.92, 1,323.06 and 565.80 is: 780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.92 : 1,323.06 = 565.80 : x
  2. Step 2: Convert to fraction form
    958.92/1,323.06 = 565.80/x
  3. Step 3: Cross multiply
    958.92x = 1,323.06 × 565.80
  4. Step 4: Simplify right side
    958.92x = 748,587.35
  5. Step 5: Solve for x
    x = 748,587.35/958.92
  6. Step 6: Final answer
    x = 780.66

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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.