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Finding the Fourth Proportional to 160.79, 240.72 and 111.98

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Solution

The fourth proportional to 160.79, 240.72 and 111.98 is: 167.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.79 : 240.72 = 111.98 : x
  2. Step 2: Convert to fraction form
    160.79/240.72 = 111.98/x
  3. Step 3: Cross multiply
    160.79x = 240.72 × 111.98
  4. Step 4: Simplify right side
    160.79x = 26,954.62
  5. Step 5: Solve for x
    x = 26,954.62/160.79
  6. Step 6: Final answer
    x = 167.64

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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.