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Finding the Fourth Proportional to 269.52, 372 and 153.11

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Solution

The fourth proportional to 269.52, 372 and 153.11 is: 211.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.52 : 372 = 153.11 : x
  2. Step 2: Convert to fraction form
    269.52/372 = 153.11/x
  3. Step 3: Cross multiply
    269.52x = 372 × 153.11
  4. Step 4: Simplify right side
    269.52x = 56,955.06
  5. Step 5: Solve for x
    x = 56,955.06/269.52
  6. Step 6: Final answer
    x = 211.32

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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.