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Finding the Fourth Proportional to 178.74, 266.52 and 157.16

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Solution

The fourth proportional to 178.74, 266.52 and 157.16 is: 234.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.74 : 266.52 = 157.16 : x
  2. Step 2: Convert to fraction form
    178.74/266.52 = 157.16/x
  3. Step 3: Cross multiply
    178.74x = 266.52 × 157.16
  4. Step 4: Simplify right side
    178.74x = 41,884.95
  5. Step 5: Solve for x
    x = 41,884.95/178.74
  6. Step 6: Final answer
    x = 234.33

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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.