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Finding the Fourth Proportional to 261.68, 361.02 and 162.08

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Solution

The fourth proportional to 261.68, 361.02 and 162.08 is: 223.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.68 : 361.02 = 162.08 : x
  2. Step 2: Convert to fraction form
    261.68/361.02 = 162.08/x
  3. Step 3: Cross multiply
    261.68x = 361.02 × 162.08
  4. Step 4: Simplify right side
    261.68x = 58,514.12
  5. Step 5: Solve for x
    x = 58,514.12/261.68
  6. Step 6: Final answer
    x = 223.61

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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.