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Finding the Fourth Proportional to 411.03, 567.32 and 255.75

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Solution

The fourth proportional to 411.03, 567.32 and 255.75 is: 352.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.03 : 567.32 = 255.75 : x
  2. Step 2: Convert to fraction form
    411.03/567.32 = 255.75/x
  3. Step 3: Cross multiply
    411.03x = 567.32 × 255.75
  4. Step 4: Simplify right side
    411.03x = 145,090.81
  5. Step 5: Solve for x
    x = 145,090.81/411.03
  6. Step 6: Final answer
    x = 352.99

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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.