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Finding the Fourth Proportional to 567.48, 851.34 and 259.38

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Solution

The fourth proportional to 567.48, 851.34 and 259.38 is: 389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    567.48 : 851.34 = 259.38 : x
  2. Step 2: Convert to fraction form
    567.48/851.34 = 259.38/x
  3. Step 3: Cross multiply
    567.48x = 851.34 × 259.38
  4. Step 4: Simplify right side
    567.48x = 220,816.96
  5. Step 5: Solve for x
    x = 220,816.96/567.48
  6. Step 6: Final answer
    x = 389.12

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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.