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Finding the Fourth Proportional to 140.59, 210.98 and 108.19

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Solution

The fourth proportional to 140.59, 210.98 and 108.19 is: 162.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.59 : 210.98 = 108.19 : x
  2. Step 2: Convert to fraction form
    140.59/210.98 = 108.19/x
  3. Step 3: Cross multiply
    140.59x = 210.98 × 108.19
  4. Step 4: Simplify right side
    140.59x = 22,825.93
  5. Step 5: Solve for x
    x = 22,825.93/140.59
  6. Step 6: Final answer
    x = 162.36

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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.