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Finding the Fourth Proportional to 925.38, 1,276.40 and 738.54

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Solution

The fourth proportional to 925.38, 1,276.40 and 738.54 is: 1,018.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.38 : 1,276.40 = 738.54 : x
  2. Step 2: Convert to fraction form
    925.38/1,276.40 = 738.54/x
  3. Step 3: Cross multiply
    925.38x = 1,276.40 × 738.54
  4. Step 4: Simplify right side
    925.38x = 942,672.46
  5. Step 5: Solve for x
    x = 942,672.46/925.38
  6. Step 6: Final answer
    x = 1,018.69

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1.5x scale

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.