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Finding the Fourth Proportional to 378.16, 567.16 and 104.18

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Solution

The fourth proportional to 378.16, 567.16 and 104.18 is: 156.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.16 : 567.16 = 104.18 : x
  2. Step 2: Convert to fraction form
    378.16/567.16 = 104.18/x
  3. Step 3: Cross multiply
    378.16x = 567.16 × 104.18
  4. Step 4: Simplify right side
    378.16x = 59,086.73
  5. Step 5: Solve for x
    x = 59,086.73/378.16
  6. Step 6: Final answer
    x = 156.25

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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.