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Finding the Fourth Proportional to 378.40, 567.07 and 296.23

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Solution

The fourth proportional to 378.40, 567.07 and 296.23 is: 443.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.40 : 567.07 = 296.23 : x
  2. Step 2: Convert to fraction form
    378.40/567.07 = 296.23/x
  3. Step 3: Cross multiply
    378.40x = 567.07 × 296.23
  4. Step 4: Simplify right side
    378.40x = 167,983.15
  5. Step 5: Solve for x
    x = 167,983.15/378.40
  6. Step 6: Final answer
    x = 443.93

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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.