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Finding the Fourth Proportional to 378.32, 567.41 and 118.29

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Solution

The fourth proportional to 378.32, 567.41 and 118.29 is: 177.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.32 : 567.41 = 118.29 : x
  2. Step 2: Convert to fraction form
    378.32/567.41 = 118.29/x
  3. Step 3: Cross multiply
    378.32x = 567.41 × 118.29
  4. Step 4: Simplify right side
    378.32x = 67,119.22
  5. Step 5: Solve for x
    x = 67,119.22/378.32
  6. Step 6: Final answer
    x = 177.41

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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.