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Finding the Fourth Proportional to 949.29, 1,422.92 and 539.23

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Solution

The fourth proportional to 949.29, 1,422.92 and 539.23 is: 808.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.29 : 1,422.92 = 539.23 : x
  2. Step 2: Convert to fraction form
    949.29/1,422.92 = 539.23/x
  3. Step 3: Cross multiply
    949.29x = 1,422.92 × 539.23
  4. Step 4: Simplify right side
    949.29x = 767,282.58
  5. Step 5: Solve for x
    x = 767,282.58/949.29
  6. Step 6: Final answer
    x = 808.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.