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Finding the Fourth Proportional to 340.46, 469.85 and 200.57

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Solution

The fourth proportional to 340.46, 469.85 and 200.57 is: 276.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.46 : 469.85 = 200.57 : x
  2. Step 2: Convert to fraction form
    340.46/469.85 = 200.57/x
  3. Step 3: Cross multiply
    340.46x = 469.85 × 200.57
  4. Step 4: Simplify right side
    340.46x = 94,235.97
  5. Step 5: Solve for x
    x = 94,235.97/340.46
  6. Step 6: Final answer
    x = 276.79

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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.