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Finding the Fourth Proportional to 544.29, 751.19 and 311.49

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Solution

The fourth proportional to 544.29, 751.19 and 311.49 is: 429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.29 : 751.19 = 311.49 : x
  2. Step 2: Convert to fraction form
    544.29/751.19 = 311.49/x
  3. Step 3: Cross multiply
    544.29x = 751.19 × 311.49
  4. Step 4: Simplify right side
    544.29x = 233,986.62
  5. Step 5: Solve for x
    x = 233,986.62/544.29
  6. Step 6: Final answer
    x = 429.89

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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.