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Finding the Fourth Proportional to 547.80, 756 and 326.77

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Solution

The fourth proportional to 547.80, 756 and 326.77 is: 450.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.80 : 756 = 326.77 : x
  2. Step 2: Convert to fraction form
    547.80/756 = 326.77/x
  3. Step 3: Cross multiply
    547.80x = 756 × 326.77
  4. Step 4: Simplify right side
    547.80x = 247,036.23
  5. Step 5: Solve for x
    x = 247,036.23/547.80
  6. Step 6: Final answer
    x = 450.96

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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.