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Finding the Fourth Proportional to 269.62, 372.16 and 153.26

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Solution

The fourth proportional to 269.62, 372.16 and 153.26 is: 211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.62 : 372.16 = 153.26 : x
  2. Step 2: Convert to fraction form
    269.62/372.16 = 153.26/x
  3. Step 3: Cross multiply
    269.62x = 372.16 × 153.26
  4. Step 4: Simplify right side
    269.62x = 57,037.24
  5. Step 5: Solve for x
    x = 57,037.24/269.62
  6. Step 6: Final answer
    x = 211.55

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