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Finding the Fourth Proportional to 269.13, 371.42 and 152.70

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Solution

The fourth proportional to 269.13, 371.42 and 152.70 is: 210.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.13 : 371.42 = 152.70 : x
  2. Step 2: Convert to fraction form
    269.13/371.42 = 152.70/x
  3. Step 3: Cross multiply
    269.13x = 371.42 × 152.70
  4. Step 4: Simplify right side
    269.13x = 56,715.83
  5. Step 5: Solve for x
    x = 56,715.83/269.13
  6. Step 6: Final answer
    x = 210.74

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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.