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Finding the Fourth Proportional to 411.55, 567.61 and 264.20

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Solution

The fourth proportional to 411.55, 567.61 and 264.20 is: 364.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.55 : 567.61 = 264.20 : x
  2. Step 2: Convert to fraction form
    411.55/567.61 = 264.20/x
  3. Step 3: Cross multiply
    411.55x = 567.61 × 264.20
  4. Step 4: Simplify right side
    411.55x = 149,959.06
  5. Step 5: Solve for x
    x = 149,959.06/411.55
  6. Step 6: Final answer
    x = 364.38

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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.