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Finding the Fourth Proportional to 377.70, 521.19 and 230.31

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Solution

The fourth proportional to 377.70, 521.19 and 230.31 is: 317.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.70 : 521.19 = 230.31 : x
  2. Step 2: Convert to fraction form
    377.70/521.19 = 230.31/x
  3. Step 3: Cross multiply
    377.70x = 521.19 × 230.31
  4. Step 4: Simplify right side
    377.70x = 120,035.27
  5. Step 5: Solve for x
    x = 120,035.27/377.70
  6. Step 6: Final answer
    x = 317.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.