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Finding the Fourth Proportional to 731.11, 1,094.30 and 383.95

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Solution

The fourth proportional to 731.11, 1,094.30 and 383.95 is: 574.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.11 : 1,094.30 = 383.95 : x
  2. Step 2: Convert to fraction form
    731.11/1,094.30 = 383.95/x
  3. Step 3: Cross multiply
    731.11x = 1,094.30 × 383.95
  4. Step 4: Simplify right side
    731.11x = 420,156.49
  5. Step 5: Solve for x
    x = 420,156.49/731.11
  6. Step 6: Final answer
    x = 574.68

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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.