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Finding the Fourth Proportional to 461.44, 691.67 and 307.47

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Solution

The fourth proportional to 461.44, 691.67 and 307.47 is: 460.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.44 : 691.67 = 307.47 : x
  2. Step 2: Convert to fraction form
    461.44/691.67 = 307.47/x
  3. Step 3: Cross multiply
    461.44x = 691.67 × 307.47
  4. Step 4: Simplify right side
    461.44x = 212,671.14
  5. Step 5: Solve for x
    x = 212,671.14/461.44
  6. Step 6: Final answer
    x = 460.88

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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.