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Finding the Fourth Proportional to 116.44, 160.63 and 72.74

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Solution

The fourth proportional to 116.44, 160.63 and 72.74 is: 100.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.44 : 160.63 = 72.74 : x
  2. Step 2: Convert to fraction form
    116.44/160.63 = 72.74/x
  3. Step 3: Cross multiply
    116.44x = 160.63 × 72.74
  4. Step 4: Simplify right side
    116.44x = 11,684.23
  5. Step 5: Solve for x
    x = 11,684.23/116.44
  6. Step 6: Final answer
    x = 100.35

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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.