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Finding the Fourth Proportional to 155.94, 215.43 and 132.87

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Solution

The fourth proportional to 155.94, 215.43 and 132.87 is: 183.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.94 : 215.43 = 132.87 : x
  2. Step 2: Convert to fraction form
    155.94/215.43 = 132.87/x
  3. Step 3: Cross multiply
    155.94x = 215.43 × 132.87
  4. Step 4: Simplify right side
    155.94x = 28,623.80
  5. Step 5: Solve for x
    x = 28,623.80/155.94
  6. Step 6: Final answer
    x = 183.55

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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.