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Finding the Fourth Proportional to 881.31, 1,320.08 and 572.26

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Solution

The fourth proportional to 881.31, 1,320.08 and 572.26 is: 857.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.31 : 1,320.08 = 572.26 : x
  2. Step 2: Convert to fraction form
    881.31/1,320.08 = 572.26/x
  3. Step 3: Cross multiply
    881.31x = 1,320.08 × 572.26
  4. Step 4: Simplify right side
    881.31x = 755,428.98
  5. Step 5: Solve for x
    x = 755,428.98/881.31
  6. Step 6: Final answer
    x = 857.17

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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.