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Finding the Fourth Proportional to 411.47, 567.80 and 234.43

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Solution

The fourth proportional to 411.47, 567.80 and 234.43 is: 323.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.47 : 567.80 = 234.43 : x
  2. Step 2: Convert to fraction form
    411.47/567.80 = 234.43/x
  3. Step 3: Cross multiply
    411.47x = 567.80 × 234.43
  4. Step 4: Simplify right side
    411.47x = 133,108.18
  5. Step 5: Solve for x
    x = 133,108.18/411.47
  6. Step 6: Final answer
    x = 323.49

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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.