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Finding the Fourth Proportional to 880.01, 1,211.95 and 731.30

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Solution

The fourth proportional to 880.01, 1,211.95 and 731.30 is: 1,007.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.01 : 1,211.95 = 731.30 : x
  2. Step 2: Convert to fraction form
    880.01/1,211.95 = 731.30/x
  3. Step 3: Cross multiply
    880.01x = 1,211.95 × 731.30
  4. Step 4: Simplify right side
    880.01x = 886,297.21
  5. Step 5: Solve for x
    x = 886,297.21/880.01
  6. Step 6: Final answer
    x = 1,007.14

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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.