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Finding the Fourth Proportional to 179.40, 267.68 and 165.68

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Solution

The fourth proportional to 179.40, 267.68 and 165.68 is: 247.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.40 : 267.68 = 165.68 : x
  2. Step 2: Convert to fraction form
    179.40/267.68 = 165.68/x
  3. Step 3: Cross multiply
    179.40x = 267.68 × 165.68
  4. Step 4: Simplify right side
    179.40x = 44,349.22
  5. Step 5: Solve for x
    x = 44,349.22/179.40
  6. Step 6: Final answer
    x = 247.21

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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.