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Finding the Fourth Proportional to 547.80, 755.96 and 314.92

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Solution

The fourth proportional to 547.80, 755.96 and 314.92 is: 434.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.80 : 755.96 = 314.92 : x
  2. Step 2: Convert to fraction form
    547.80/755.96 = 314.92/x
  3. Step 3: Cross multiply
    547.80x = 755.96 × 314.92
  4. Step 4: Simplify right side
    547.80x = 238,066.92
  5. Step 5: Solve for x
    x = 238,066.92/547.80
  6. Step 6: Final answer
    x = 434.59

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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.