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Finding the Fourth Proportional to 241.12, 360.02 and 215.20

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Solution

The fourth proportional to 241.12, 360.02 and 215.20 is: 321.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.12 : 360.02 = 215.20 : x
  2. Step 2: Convert to fraction form
    241.12/360.02 = 215.20/x
  3. Step 3: Cross multiply
    241.12x = 360.02 × 215.20
  4. Step 4: Simplify right side
    241.12x = 77,476.30
  5. Step 5: Solve for x
    x = 77,476.30/241.12
  6. Step 6: Final answer
    x = 321.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.