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Finding the Fourth Proportional to 155.81, 232.28 and 149.19

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Solution

The fourth proportional to 155.81, 232.28 and 149.19 is: 222.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.81 : 232.28 = 149.19 : x
  2. Step 2: Convert to fraction form
    155.81/232.28 = 149.19/x
  3. Step 3: Cross multiply
    155.81x = 232.28 × 149.19
  4. Step 4: Simplify right side
    155.81x = 34,653.11
  5. Step 5: Solve for x
    x = 34,653.11/155.81
  6. Step 6: Final answer
    x = 222.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.