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Finding the Fourth Proportional to 549.17, 757.77 and 339.42

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Solution

The fourth proportional to 549.17, 757.77 and 339.42 is: 468.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.17 : 757.77 = 339.42 : x
  2. Step 2: Convert to fraction form
    549.17/757.77 = 339.42/x
  3. Step 3: Cross multiply
    549.17x = 757.77 × 339.42
  4. Step 4: Simplify right side
    549.17x = 257,199.45
  5. Step 5: Solve for x
    x = 257,199.45/549.17
  6. Step 6: Final answer
    x = 468.34

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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.