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Finding the Fourth Proportional to 343.48, 515.27 and 124.12

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Solution

The fourth proportional to 343.48, 515.27 and 124.12 is: 186.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.48 : 515.27 = 124.12 : x
  2. Step 2: Convert to fraction form
    343.48/515.27 = 124.12/x
  3. Step 3: Cross multiply
    343.48x = 515.27 × 124.12
  4. Step 4: Simplify right side
    343.48x = 63,952.74
  5. Step 5: Solve for x
    x = 63,952.74/343.48
  6. Step 6: Final answer
    x = 186.19

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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.