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Finding the Fourth Proportional to 591.21, 887.09 and 266.54

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Solution

The fourth proportional to 591.21, 887.09 and 266.54 is: 399.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.21 : 887.09 = 266.54 : x
  2. Step 2: Convert to fraction form
    591.21/887.09 = 266.54/x
  3. Step 3: Cross multiply
    591.21x = 887.09 × 266.54
  4. Step 4: Simplify right side
    591.21x = 236,439.20
  5. Step 5: Solve for x
    x = 236,439.20/591.21
  6. Step 6: Final answer
    x = 399.92

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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.