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Finding the Fourth Proportional to 567.75, 851.72 and 259.61

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Solution

The fourth proportional to 567.75, 851.72 and 259.61 is: 389.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.75 : 851.72 = 259.61 : x
  2. Step 2: Convert to fraction form
    567.75/851.72 = 259.61/x
  3. Step 3: Cross multiply
    567.75x = 851.72 × 259.61
  4. Step 4: Simplify right side
    567.75x = 221,109.47
  5. Step 5: Solve for x
    x = 221,109.47/567.75
  6. Step 6: Final answer
    x = 389.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.