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Finding the Fourth Proportional to 342.67, 472.62 and 249.40

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Solution

The fourth proportional to 342.67, 472.62 and 249.40 is: 343.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.67 : 472.62 = 249.40 : x
  2. Step 2: Convert to fraction form
    342.67/472.62 = 249.40/x
  3. Step 3: Cross multiply
    342.67x = 472.62 × 249.40
  4. Step 4: Simplify right side
    342.67x = 117,871.43
  5. Step 5: Solve for x
    x = 117,871.43/342.67
  6. Step 6: Final answer
    x = 343.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.