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Finding the Fourth Proportional to 165.16, 247.62 and 116.40

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Solution

The fourth proportional to 165.16, 247.62 and 116.40 is: 174.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.16 : 247.62 = 116.40 : x
  2. Step 2: Convert to fraction form
    165.16/247.62 = 116.40/x
  3. Step 3: Cross multiply
    165.16x = 247.62 × 116.40
  4. Step 4: Simplify right side
    165.16x = 28,824.33
  5. Step 5: Solve for x
    x = 28,824.33/165.16
  6. Step 6: Final answer
    x = 174.53

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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.