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Finding the Fourth Proportional to 342.87, 514.19 and 137.52

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Solution

The fourth proportional to 342.87, 514.19 and 137.52 is: 206.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.87 : 514.19 = 137.52 : x
  2. Step 2: Convert to fraction form
    342.87/514.19 = 137.52/x
  3. Step 3: Cross multiply
    342.87x = 514.19 × 137.52
  4. Step 4: Simplify right side
    342.87x = 70,710.72
  5. Step 5: Solve for x
    x = 70,710.72/342.87
  6. Step 6: Final answer
    x = 206.23

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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.