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Finding the Fourth Proportional to 675.32, 1,013.31 and 458.46

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Solution

The fourth proportional to 675.32, 1,013.31 and 458.46 is: 687.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.32 : 1,013.31 = 458.46 : x
  2. Step 2: Convert to fraction form
    675.32/1,013.31 = 458.46/x
  3. Step 3: Cross multiply
    675.32x = 1,013.31 × 458.46
  4. Step 4: Simplify right side
    675.32x = 464,562.10
  5. Step 5: Solve for x
    x = 464,562.10/675.32
  6. Step 6: Final answer
    x = 687.92

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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.