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Finding the Fourth Proportional to 711.52, 976.62 and 681.44

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Solution

The fourth proportional to 711.52, 976.62 and 681.44 is: 935.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.52 : 976.62 = 681.44 : x
  2. Step 2: Convert to fraction form
    711.52/976.62 = 681.44/x
  3. Step 3: Cross multiply
    711.52x = 976.62 × 681.44
  4. Step 4: Simplify right side
    711.52x = 665,507.93
  5. Step 5: Solve for x
    x = 665,507.93/711.52
  6. Step 6: Final answer
    x = 935.33

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.