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Finding the Fourth Proportional to 710.89, 981.06 and 462.42

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Solution

The fourth proportional to 710.89, 981.06 and 462.42 is: 638.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.89 : 981.06 = 462.42 : x
  2. Step 2: Convert to fraction form
    710.89/981.06 = 462.42/x
  3. Step 3: Cross multiply
    710.89x = 981.06 × 462.42
  4. Step 4: Simplify right side
    710.89x = 453,661.77
  5. Step 5: Solve for x
    x = 453,661.77/710.89
  6. Step 6: Final answer
    x = 638.16

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Half scale
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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.