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Finding the Fourth Proportional to 934.68, 1,399.14 and 836.76

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Solution

The fourth proportional to 934.68, 1,399.14 and 836.76 is: 1,252.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    934.68 : 1,399.14 = 836.76 : x
  2. Step 2: Convert to fraction form
    934.68/1,399.14 = 836.76/x
  3. Step 3: Cross multiply
    934.68x = 1,399.14 × 836.76
  4. Step 4: Simplify right side
    934.68x = 1,170,744.39
  5. Step 5: Solve for x
    x = 1,170,744.39/934.68
  6. Step 6: Final answer
    x = 1,252.56

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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.