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Finding the Fourth Proportional to 925.16, 1,387.23 and 632.99

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Solution

The fourth proportional to 925.16, 1,387.23 and 632.99 is: 949.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.16 : 1,387.23 = 632.99 : x
  2. Step 2: Convert to fraction form
    925.16/1,387.23 = 632.99/x
  3. Step 3: Cross multiply
    925.16x = 1,387.23 × 632.99
  4. Step 4: Simplify right side
    925.16x = 878,102.72
  5. Step 5: Solve for x
    x = 878,102.72/925.16
  6. Step 6: Final answer
    x = 949.14

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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.