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Finding the Fourth Proportional to 886.80, 1,330.92 and 476.22

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Solution

The fourth proportional to 886.80, 1,330.92 and 476.22 is: 714.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.80 : 1,330.92 = 476.22 : x
  2. Step 2: Convert to fraction form
    886.80/1,330.92 = 476.22/x
  3. Step 3: Cross multiply
    886.80x = 1,330.92 × 476.22
  4. Step 4: Simplify right side
    886.80x = 633,810.72
  5. Step 5: Solve for x
    x = 633,810.72/886.80
  6. Step 6: Final answer
    x = 714.72

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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.