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Finding the Fourth Proportional to 737.25, 1,015.98 and 678.47

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Solution

The fourth proportional to 737.25, 1,015.98 and 678.47 is: 934.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.25 : 1,015.98 = 678.47 : x
  2. Step 2: Convert to fraction form
    737.25/1,015.98 = 678.47/x
  3. Step 3: Cross multiply
    737.25x = 1,015.98 × 678.47
  4. Step 4: Simplify right side
    737.25x = 689,306.87
  5. Step 5: Solve for x
    x = 689,306.87/737.25
  6. Step 6: Final answer
    x = 934.97

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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.