Home / 925.20-1,387.08-308.52

Finding the Fourth Proportional to 925.20, 1,387.08 and 308.52

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Solution

The fourth proportional to 925.20, 1,387.08 and 308.52 is: 462.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.20 : 1,387.08 = 308.52 : x
  2. Step 2: Convert to fraction form
    925.20/1,387.08 = 308.52/x
  3. Step 3: Cross multiply
    925.20x = 1,387.08 × 308.52
  4. Step 4: Simplify right side
    925.20x = 427,941.92
  5. Step 5: Solve for x
    x = 427,941.92/925.20
  6. Step 6: Final answer
    x = 462.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.