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Finding the Fourth Proportional to 225.05, 310.79 and 181.13

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Solution

The fourth proportional to 225.05, 310.79 and 181.13 is: 250.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.05 : 310.79 = 181.13 : x
  2. Step 2: Convert to fraction form
    225.05/310.79 = 181.13/x
  3. Step 3: Cross multiply
    225.05x = 310.79 × 181.13
  4. Step 4: Simplify right side
    225.05x = 56,292.29
  5. Step 5: Solve for x
    x = 56,292.29/225.05
  6. Step 6: Final answer
    x = 250.14

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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.