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Finding the Fourth Proportional to 549.88, 758.80 and 301.20

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Solution

The fourth proportional to 549.88, 758.80 and 301.20 is: 415.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.88 : 758.80 = 301.20 : x
  2. Step 2: Convert to fraction form
    549.88/758.80 = 301.20/x
  3. Step 3: Cross multiply
    549.88x = 758.80 × 301.20
  4. Step 4: Simplify right side
    549.88x = 228,550.66
  5. Step 5: Solve for x
    x = 228,550.66/549.88
  6. Step 6: Final answer
    x = 415.63

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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.