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Finding the Fourth Proportional to 343.80, 473.76 and 277.92

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Solution

The fourth proportional to 343.80, 473.76 and 277.92 is: 382.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.80 : 473.76 = 277.92 : x
  2. Step 2: Convert to fraction form
    343.80/473.76 = 277.92/x
  3. Step 3: Cross multiply
    343.80x = 473.76 × 277.92
  4. Step 4: Simplify right side
    343.80x = 131,667.38
  5. Step 5: Solve for x
    x = 131,667.38/343.80
  6. Step 6: Final answer
    x = 382.98

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Why These Related Problems?

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