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Finding the Fourth Proportional to 544.79, 751.68 and 308.71

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Solution

The fourth proportional to 544.79, 751.68 and 308.71 is: 425.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.79 : 751.68 = 308.71 : x
  2. Step 2: Convert to fraction form
    544.79/751.68 = 308.71/x
  3. Step 3: Cross multiply
    544.79x = 751.68 × 308.71
  4. Step 4: Simplify right side
    544.79x = 232,053.78
  5. Step 5: Solve for x
    x = 232,053.78/544.79
  6. Step 6: Final answer
    x = 425.95

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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.