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Finding the Fourth Proportional to 436.49, 655.08 and 231.18

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Solution

The fourth proportional to 436.49, 655.08 and 231.18 is: 346.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    436.49 : 655.08 = 231.18 : x
  2. Step 2: Convert to fraction form
    436.49/655.08 = 231.18/x
  3. Step 3: Cross multiply
    436.49x = 655.08 × 231.18
  4. Step 4: Simplify right side
    436.49x = 151,441.39
  5. Step 5: Solve for x
    x = 151,441.39/436.49
  6. Step 6: Final answer
    x = 346.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.