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Finding the Fourth Proportional to 340.14, 468.78 and 277.74

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Solution

The fourth proportional to 340.14, 468.78 and 277.74 is: 382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.14 : 468.78 = 277.74 : x
  2. Step 2: Convert to fraction form
    340.14/468.78 = 277.74/x
  3. Step 3: Cross multiply
    340.14x = 468.78 × 277.74
  4. Step 4: Simplify right side
    340.14x = 130,198.96
  5. Step 5: Solve for x
    x = 130,198.96/340.14
  6. Step 6: Final answer
    x = 382.78

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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.