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Finding the Fourth Proportional to 360.42, 497.43 and 261.09

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Solution

The fourth proportional to 360.42, 497.43 and 261.09 is: 360.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.42 : 497.43 = 261.09 : x
  2. Step 2: Convert to fraction form
    360.42/497.43 = 261.09/x
  3. Step 3: Cross multiply
    360.42x = 497.43 × 261.09
  4. Step 4: Simplify right side
    360.42x = 129,874.00
  5. Step 5: Solve for x
    x = 129,874.00/360.42
  6. Step 6: Final answer
    x = 360.34

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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.