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Finding the Fourth Proportional to 375.88, 518.74 and 220.66

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Solution

The fourth proportional to 375.88, 518.74 and 220.66 is: 304.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.88 : 518.74 = 220.66 : x
  2. Step 2: Convert to fraction form
    375.88/518.74 = 220.66/x
  3. Step 3: Cross multiply
    375.88x = 518.74 × 220.66
  4. Step 4: Simplify right side
    375.88x = 114,465.17
  5. Step 5: Solve for x
    x = 114,465.17/375.88
  6. Step 6: Final answer
    x = 304.53

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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.