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Finding the Fourth Proportional to 306.15, 422.01 and 232.17

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Solution

The fourth proportional to 306.15, 422.01 and 232.17 is: 320.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.15 : 422.01 = 232.17 : x
  2. Step 2: Convert to fraction form
    306.15/422.01 = 232.17/x
  3. Step 3: Cross multiply
    306.15x = 422.01 × 232.17
  4. Step 4: Simplify right side
    306.15x = 97,978.06
  5. Step 5: Solve for x
    x = 97,978.06/306.15
  6. Step 6: Final answer
    x = 320.03

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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.