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Finding the Fourth Proportional to 269.80, 372.50 and 170.36

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Solution

The fourth proportional to 269.80, 372.50 and 170.36 is: 235.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.80 : 372.50 = 170.36 : x
  2. Step 2: Convert to fraction form
    269.80/372.50 = 170.36/x
  3. Step 3: Cross multiply
    269.80x = 372.50 × 170.36
  4. Step 4: Simplify right side
    269.80x = 63,459.10
  5. Step 5: Solve for x
    x = 63,459.10/269.80
  6. Step 6: Final answer
    x = 235.21

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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.