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Finding the Fourth Proportional to 925.73, 1,276.05 and 738.92

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Solution

The fourth proportional to 925.73, 1,276.05 and 738.92 is: 1,018.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.73 : 1,276.05 = 738.92 : x
  2. Step 2: Convert to fraction form
    925.73/1,276.05 = 738.92/x
  3. Step 3: Cross multiply
    925.73x = 1,276.05 × 738.92
  4. Step 4: Simplify right side
    925.73x = 942,904.83
  5. Step 5: Solve for x
    x = 942,904.83/925.73
  6. Step 6: Final answer
    x = 1,018.55

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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.