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Finding the Fourth Proportional to 547.92, 755.98 and 351.70

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Solution

The fourth proportional to 547.92, 755.98 and 351.70 is: 485.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.92 : 755.98 = 351.70 : x
  2. Step 2: Convert to fraction form
    547.92/755.98 = 351.70/x
  3. Step 3: Cross multiply
    547.92x = 755.98 × 351.70
  4. Step 4: Simplify right side
    547.92x = 265,878.17
  5. Step 5: Solve for x
    x = 265,878.17/547.92
  6. Step 6: Final answer
    x = 485.25

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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.