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Finding the Fourth Proportional to 157.30, 234.86 and 141.95

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Solution

The fourth proportional to 157.30, 234.86 and 141.95 is: 211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157.30 : 234.86 = 141.95 : x
  2. Step 2: Convert to fraction form
    157.30/234.86 = 141.95/x
  3. Step 3: Cross multiply
    157.30x = 234.86 × 141.95
  4. Step 4: Simplify right side
    157.30x = 33,338.25
  5. Step 5: Solve for x
    x = 33,338.25/157.30
  6. Step 6: Final answer
    x = 211.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.