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Finding the Fourth Proportional to 155.66, 232.34 and 140.99

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Solution

The fourth proportional to 155.66, 232.34 and 140.99 is: 210.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.66 : 232.34 = 140.99 : x
  2. Step 2: Convert to fraction form
    155.66/232.34 = 140.99/x
  3. Step 3: Cross multiply
    155.66x = 232.34 × 140.99
  4. Step 4: Simplify right side
    155.66x = 32,757.62
  5. Step 5: Solve for x
    x = 32,757.62/155.66
  6. Step 6: Final answer
    x = 210.44

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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.