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Finding the Fourth Proportional to 342.63, 512.49 and 249.51

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Solution

The fourth proportional to 342.63, 512.49 and 249.51 is: 373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.63 : 512.49 = 249.51 : x
  2. Step 2: Convert to fraction form
    342.63/512.49 = 249.51/x
  3. Step 3: Cross multiply
    342.63x = 512.49 × 249.51
  4. Step 4: Simplify right side
    342.63x = 127,871.38
  5. Step 5: Solve for x
    x = 127,871.38/342.63
  6. Step 6: Final answer
    x = 373.21

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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.