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Finding the Fourth Proportional to 549.98, 758.99 and 301.28

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Solution

The fourth proportional to 549.98, 758.99 and 301.28 is: 415.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.98 : 758.99 = 301.28 : x
  2. Step 2: Convert to fraction form
    549.98/758.99 = 301.28/x
  3. Step 3: Cross multiply
    549.98x = 758.99 × 301.28
  4. Step 4: Simplify right side
    549.98x = 228,668.90
  5. Step 5: Solve for x
    x = 228,668.90/549.98
  6. Step 6: Final answer
    x = 415.78

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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.