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Finding the Fourth Proportional to 411.61, 567.28 and 358.56

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Solution

The fourth proportional to 411.61, 567.28 and 358.56 is: 494.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.61 : 567.28 = 358.56 : x
  2. Step 2: Convert to fraction form
    411.61/567.28 = 358.56/x
  3. Step 3: Cross multiply
    411.61x = 567.28 × 358.56
  4. Step 4: Simplify right side
    411.61x = 203,403.92
  5. Step 5: Solve for x
    x = 203,403.92/411.61
  6. Step 6: Final answer
    x = 494.17

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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.