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Finding the Fourth Proportional to 218.18, 301.30 and 181.59

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Solution

The fourth proportional to 218.18, 301.30 and 181.59 is: 250.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.18 : 301.30 = 181.59 : x
  2. Step 2: Convert to fraction form
    218.18/301.30 = 181.59/x
  3. Step 3: Cross multiply
    218.18x = 301.30 × 181.59
  4. Step 4: Simplify right side
    218.18x = 54,712.61
  5. Step 5: Solve for x
    x = 54,712.61/218.18
  6. Step 6: Final answer
    x = 250.77

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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.