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Finding the Fourth Proportional to 411.31, 567.58 and 245.52

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Solution

The fourth proportional to 411.31, 567.58 and 245.52 is: 338.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.31 : 567.58 = 245.52 : x
  2. Step 2: Convert to fraction form
    411.31/567.58 = 245.52/x
  3. Step 3: Cross multiply
    411.31x = 567.58 × 245.52
  4. Step 4: Simplify right side
    411.31x = 139,352.24
  5. Step 5: Solve for x
    x = 139,352.24/411.31
  6. Step 6: Final answer
    x = 338.80

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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.