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Finding the Fourth Proportional to 250.53, 345.50 and 157.28

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Solution

The fourth proportional to 250.53, 345.50 and 157.28 is: 216.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.53 : 345.50 = 157.28 : x
  2. Step 2: Convert to fraction form
    250.53/345.50 = 157.28/x
  3. Step 3: Cross multiply
    250.53x = 345.50 × 157.28
  4. Step 4: Simplify right side
    250.53x = 54,337.73
  5. Step 5: Solve for x
    x = 54,337.73/250.53
  6. Step 6: Final answer
    x = 216.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.