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Finding the Fourth Proportional to 885.20, 1,324.92 and 625.04

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Solution

The fourth proportional to 885.20, 1,324.92 and 625.04 is: 935.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    885.20 : 1,324.92 = 625.04 : x
  2. Step 2: Convert to fraction form
    885.20/1,324.92 = 625.04/x
  3. Step 3: Cross multiply
    885.20x = 1,324.92 × 625.04
  4. Step 4: Simplify right side
    885.20x = 828,128.00
  5. Step 5: Solve for x
    x = 828,128.00/885.20
  6. Step 6: Final answer
    x = 935.53

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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.