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Finding the Fourth Proportional to 411.32, 567.70 and 245.54

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Solution

The fourth proportional to 411.32, 567.70 and 245.54 is: 338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.32 : 567.70 = 245.54 : x
  2. Step 2: Convert to fraction form
    411.32/567.70 = 245.54/x
  3. Step 3: Cross multiply
    411.32x = 567.70 × 245.54
  4. Step 4: Simplify right side
    411.32x = 139,394.32
  5. Step 5: Solve for x
    x = 139,394.32/411.32
  6. Step 6: Final answer
    x = 338.90

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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.