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Finding the Fourth Proportional to 266.95, 399.61 and 158.41

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Solution

The fourth proportional to 266.95, 399.61 and 158.41 is: 237.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.95 : 399.61 = 158.41 : x
  2. Step 2: Convert to fraction form
    266.95/399.61 = 158.41/x
  3. Step 3: Cross multiply
    266.95x = 399.61 × 158.41
  4. Step 4: Simplify right side
    266.95x = 63,302.22
  5. Step 5: Solve for x
    x = 63,302.22/266.95
  6. Step 6: Final answer
    x = 237.13

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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.