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Finding the Fourth Proportional to 437.13, 655.70 and 231.57

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Solution

The fourth proportional to 437.13, 655.70 and 231.57 is: 347.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.13 : 655.70 = 231.57 : x
  2. Step 2: Convert to fraction form
    437.13/655.70 = 231.57/x
  3. Step 3: Cross multiply
    437.13x = 655.70 × 231.57
  4. Step 4: Simplify right side
    437.13x = 151,839.29
  5. Step 5: Solve for x
    x = 151,839.29/437.13
  6. Step 6: Final answer
    x = 347.36

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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.