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Finding the Fourth Proportional to 379.32, 567.87 and 288.37

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Solution

The fourth proportional to 379.32, 567.87 and 288.37 is: 431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.32 : 567.87 = 288.37 : x
  2. Step 2: Convert to fraction form
    379.32/567.87 = 288.37/x
  3. Step 3: Cross multiply
    379.32x = 567.87 × 288.37
  4. Step 4: Simplify right side
    379.32x = 163,756.67
  5. Step 5: Solve for x
    x = 163,756.67/379.32
  6. Step 6: Final answer
    x = 431.71

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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.