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Finding the Fourth Proportional to 881.32, 1,216.04 and 527.15

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Solution

The fourth proportional to 881.32, 1,216.04 and 527.15 is: 727.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.32 : 1,216.04 = 527.15 : x
  2. Step 2: Convert to fraction form
    881.32/1,216.04 = 527.15/x
  3. Step 3: Cross multiply
    881.32x = 1,216.04 × 527.15
  4. Step 4: Simplify right side
    881.32x = 641,035.49
  5. Step 5: Solve for x
    x = 641,035.49/881.32
  6. Step 6: Final answer
    x = 727.36

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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.