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Finding the Fourth Proportional to 187.20, 260.13 and 185.32

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Solution

The fourth proportional to 187.20, 260.13 and 185.32 is: 257.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.20 : 260.13 = 185.32 : x
  2. Step 2: Convert to fraction form
    187.20/260.13 = 185.32/x
  3. Step 3: Cross multiply
    187.20x = 260.13 × 185.32
  4. Step 4: Simplify right side
    187.20x = 48,207.29
  5. Step 5: Solve for x
    x = 48,207.29/187.20
  6. Step 6: Final answer
    x = 257.52

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.