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Finding the Fourth Proportional to 711.14, 981.17 and 462.46

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Solution

The fourth proportional to 711.14, 981.17 and 462.46 is: 638.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    711.14 : 981.17 = 462.46 : x
  2. Step 2: Convert to fraction form
    711.14/981.17 = 462.46/x
  3. Step 3: Cross multiply
    711.14x = 981.17 × 462.46
  4. Step 4: Simplify right side
    711.14x = 453,751.88
  5. Step 5: Solve for x
    x = 453,751.88/711.14
  6. Step 6: Final answer
    x = 638.06

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Double scale
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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.