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Finding the Fourth Proportional to 250.26, 345.42 and 156.95

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Solution

The fourth proportional to 250.26, 345.42 and 156.95 is: 216.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.26 : 345.42 = 156.95 : x
  2. Step 2: Convert to fraction form
    250.26/345.42 = 156.95/x
  3. Step 3: Cross multiply
    250.26x = 345.42 × 156.95
  4. Step 4: Simplify right side
    250.26x = 54,213.67
  5. Step 5: Solve for x
    x = 54,213.67/250.26
  6. Step 6: Final answer
    x = 216.63

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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.