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Finding the Fourth Proportional to 591.31, 887.27 and 266.61

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Solution

The fourth proportional to 591.31, 887.27 and 266.61 is: 400.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.31 : 887.27 = 266.61 : x
  2. Step 2: Convert to fraction form
    591.31/887.27 = 266.61/x
  3. Step 3: Cross multiply
    591.31x = 887.27 × 266.61
  4. Step 4: Simplify right side
    591.31x = 236,555.05
  5. Step 5: Solve for x
    x = 236,555.05/591.31
  6. Step 6: Final answer
    x = 400.05

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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.