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Finding the Fourth Proportional to 925.72, 1,277.62 and 610.92

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Solution

The fourth proportional to 925.72, 1,277.62 and 610.92 is: 843.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.72 : 1,277.62 = 610.92 : x
  2. Step 2: Convert to fraction form
    925.72/1,277.62 = 610.92/x
  3. Step 3: Cross multiply
    925.72x = 1,277.62 × 610.92
  4. Step 4: Simplify right side
    925.72x = 780,523.61
  5. Step 5: Solve for x
    x = 780,523.61/925.72
  6. Step 6: Final answer
    x = 843.15

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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.