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Finding the Fourth Proportional to 964.76, 1,331.37 and 566.35

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Solution

The fourth proportional to 964.76, 1,331.37 and 566.35 is: 781.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.76 : 1,331.37 = 566.35 : x
  2. Step 2: Convert to fraction form
    964.76/1,331.37 = 566.35/x
  3. Step 3: Cross multiply
    964.76x = 1,331.37 × 566.35
  4. Step 4: Simplify right side
    964.76x = 754,020.46
  5. Step 5: Solve for x
    x = 754,020.46/964.76
  6. Step 6: Final answer
    x = 781.56

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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.