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Finding the Fourth Proportional to 241.85, 360.91 and 215.90

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Solution

The fourth proportional to 241.85, 360.91 and 215.90 is: 322.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.85 : 360.91 = 215.90 : x
  2. Step 2: Convert to fraction form
    241.85/360.91 = 215.90/x
  3. Step 3: Cross multiply
    241.85x = 360.91 × 215.90
  4. Step 4: Simplify right side
    241.85x = 77,919.11
  5. Step 5: Solve for x
    x = 77,919.11/241.85
  6. Step 6: Final answer
    x = 322.18

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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.