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Finding the Fourth Proportional to 921.54, 1,380.28 and 595.92

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Solution

The fourth proportional to 921.54, 1,380.28 and 595.92 is: 892.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    921.54 : 1,380.28 = 595.92 : x
  2. Step 2: Convert to fraction form
    921.54/1,380.28 = 595.92/x
  3. Step 3: Cross multiply
    921.54x = 1,380.28 × 595.92
  4. Step 4: Simplify right side
    921.54x = 822,536.46
  5. Step 5: Solve for x
    x = 822,536.46/921.54
  6. Step 6: Final answer
    x = 892.57

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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.