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Finding the Fourth Proportional to 961.32, 1,326.50 and 547.32

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Solution

The fourth proportional to 961.32, 1,326.50 and 547.32 is: 755.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    961.32 : 1,326.50 = 547.32 : x
  2. Step 2: Convert to fraction form
    961.32/1,326.50 = 547.32/x
  3. Step 3: Cross multiply
    961.32x = 1,326.50 × 547.32
  4. Step 4: Simplify right side
    961.32x = 726,019.98
  5. Step 5: Solve for x
    x = 726,019.98/961.32
  6. Step 6: Final answer
    x = 755.23

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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.