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Finding the Fourth Proportional to 178.22, 266.98 and 117.17

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Solution

The fourth proportional to 178.22, 266.98 and 117.17 is: 175.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.22 : 266.98 = 117.17 : x
  2. Step 2: Convert to fraction form
    178.22/266.98 = 117.17/x
  3. Step 3: Cross multiply
    178.22x = 266.98 × 117.17
  4. Step 4: Simplify right side
    178.22x = 31,281.57
  5. Step 5: Solve for x
    x = 31,281.57/178.22
  6. Step 6: Final answer
    x = 175.52

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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.