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Finding the Fourth Proportional to 170.72, 235.44 and 118.18

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Solution

The fourth proportional to 170.72, 235.44 and 118.18 is: 162.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.72 : 235.44 = 118.18 : x
  2. Step 2: Convert to fraction form
    170.72/235.44 = 118.18/x
  3. Step 3: Cross multiply
    170.72x = 235.44 × 118.18
  4. Step 4: Simplify right side
    170.72x = 27,824.30
  5. Step 5: Solve for x
    x = 27,824.30/170.72
  6. Step 6: Final answer
    x = 162.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.