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Finding the Fourth Proportional to 266.07, 399.56 and 158.53

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Solution

The fourth proportional to 266.07, 399.56 and 158.53 is: 238.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.07 : 399.56 = 158.53 : x
  2. Step 2: Convert to fraction form
    266.07/399.56 = 158.53/x
  3. Step 3: Cross multiply
    266.07x = 399.56 × 158.53
  4. Step 4: Simplify right side
    266.07x = 63,342.25
  5. Step 5: Solve for x
    x = 63,342.25/266.07
  6. Step 6: Final answer
    x = 238.07

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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.