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Finding the Fourth Proportional to 461.12, 691.56 and 457.08

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Solution

The fourth proportional to 461.12, 691.56 and 457.08 is: 685.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.12 : 691.56 = 457.08 : x
  2. Step 2: Convert to fraction form
    461.12/691.56 = 457.08/x
  3. Step 3: Cross multiply
    461.12x = 691.56 × 457.08
  4. Step 4: Simplify right side
    461.12x = 316,098.24
  5. Step 5: Solve for x
    x = 316,098.24/461.12
  6. Step 6: Final answer
    x = 685.50

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.