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Finding the Fourth Proportional to 920.18, 1,381.44 and 596.90

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Solution

The fourth proportional to 920.18, 1,381.44 and 596.90 is: 896.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.18 : 1,381.44 = 596.90 : x
  2. Step 2: Convert to fraction form
    920.18/1,381.44 = 596.90/x
  3. Step 3: Cross multiply
    920.18x = 1,381.44 × 596.90
  4. Step 4: Simplify right side
    920.18x = 824,581.54
  5. Step 5: Solve for x
    x = 824,581.54/920.18
  6. Step 6: Final answer
    x = 896.11

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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.