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Finding the Fourth Proportional to 230.22, 318.06 and 189.04

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Solution

The fourth proportional to 230.22, 318.06 and 189.04 is: 261.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.22 : 318.06 = 189.04 : x
  2. Step 2: Convert to fraction form
    230.22/318.06 = 189.04/x
  3. Step 3: Cross multiply
    230.22x = 318.06 × 189.04
  4. Step 4: Simplify right side
    230.22x = 60,126.06
  5. Step 5: Solve for x
    x = 60,126.06/230.22
  6. Step 6: Final answer
    x = 261.17

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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.