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Finding the Fourth Proportional to 671.40, 927.32 and 537.28

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Solution

The fourth proportional to 671.40, 927.32 and 537.28 is: 742.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.40 : 927.32 = 537.28 : x
  2. Step 2: Convert to fraction form
    671.40/927.32 = 537.28/x
  3. Step 3: Cross multiply
    671.40x = 927.32 × 537.28
  4. Step 4: Simplify right side
    671.40x = 498,228.17
  5. Step 5: Solve for x
    x = 498,228.17/671.40
  6. Step 6: Final answer
    x = 742.07

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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.