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Finding the Fourth Proportional to 678.92, 937.44 and 531.29

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Solution

The fourth proportional to 678.92, 937.44 and 531.29 is: 733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    678.92 : 937.44 = 531.29 : x
  2. Step 2: Convert to fraction form
    678.92/937.44 = 531.29/x
  3. Step 3: Cross multiply
    678.92x = 937.44 × 531.29
  4. Step 4: Simplify right side
    678.92x = 498,054.84
  5. Step 5: Solve for x
    x = 498,054.84/678.92
  6. Step 6: Final answer
    x = 733.60

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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.