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Finding the Fourth Proportional to 178.32, 268.71 and 170.24

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Solution

The fourth proportional to 178.32, 268.71 and 170.24 is: 256.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.32 : 268.71 = 170.24 : x
  2. Step 2: Convert to fraction form
    178.32/268.71 = 170.24/x
  3. Step 3: Cross multiply
    178.32x = 268.71 × 170.24
  4. Step 4: Simplify right side
    178.32x = 45,745.19
  5. Step 5: Solve for x
    x = 45,745.19/178.32
  6. Step 6: Final answer
    x = 256.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.