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Finding the Fourth Proportional to 925.32, 1,275.19 and 662.88

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Solution

The fourth proportional to 925.32, 1,275.19 and 662.88 is: 913.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.32 : 1,275.19 = 662.88 : x
  2. Step 2: Convert to fraction form
    925.32/1,275.19 = 662.88/x
  3. Step 3: Cross multiply
    925.32x = 1,275.19 × 662.88
  4. Step 4: Simplify right side
    925.32x = 845,299.48
  5. Step 5: Solve for x
    x = 845,299.48/925.32
  6. Step 6: Final answer
    x = 913.52

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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.