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Finding the Fourth Proportional to 932.36, 1,398.15 and 274.05

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Solution

The fourth proportional to 932.36, 1,398.15 and 274.05 is: 410.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.36 : 1,398.15 = 274.05 : x
  2. Step 2: Convert to fraction form
    932.36/1,398.15 = 274.05/x
  3. Step 3: Cross multiply
    932.36x = 1,398.15 × 274.05
  4. Step 4: Simplify right side
    932.36x = 383,163.01
  5. Step 5: Solve for x
    x = 383,163.01/932.36
  6. Step 6: Final answer
    x = 410.96

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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.