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Finding the Fourth Proportional to 297.18, 410.18 and 186.81

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Solution

The fourth proportional to 297.18, 410.18 and 186.81 is: 257.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.18 : 410.18 = 186.81 : x
  2. Step 2: Convert to fraction form
    297.18/410.18 = 186.81/x
  3. Step 3: Cross multiply
    297.18x = 410.18 × 186.81
  4. Step 4: Simplify right side
    297.18x = 76,623.52
  5. Step 5: Solve for x
    x = 76,623.52/297.18
  6. Step 6: Final answer
    x = 257.83

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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.