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Finding the Fourth Proportional to 261.30, 360.51 and 163.02

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Solution

The fourth proportional to 261.30, 360.51 and 163.02 is: 224.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.30 : 360.51 = 163.02 : x
  2. Step 2: Convert to fraction form
    261.30/360.51 = 163.02/x
  3. Step 3: Cross multiply
    261.30x = 360.51 × 163.02
  4. Step 4: Simplify right side
    261.30x = 58,770.34
  5. Step 5: Solve for x
    x = 58,770.34/261.30
  6. Step 6: Final answer
    x = 224.92

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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.