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Finding the Fourth Proportional to 178, 267.07 and 96.74

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Solution

The fourth proportional to 178, 267.07 and 96.74 is: 145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    178 : 267.07 = 96.74 : x
  2. Step 2: Convert to fraction form
    178/267.07 = 96.74/x
  3. Step 3: Cross multiply
    178x = 267.07 × 96.74
  4. Step 4: Simplify right side
    178x = 25,836.35
  5. Step 5: Solve for x
    x = 25,836.35/178
  6. Step 6: Final answer
    x = 145.15

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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.