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Finding the Fourth Proportional to 709.95, 979.15 and 544.56

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Solution

The fourth proportional to 709.95, 979.15 and 544.56 is: 751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.95 : 979.15 = 544.56 : x
  2. Step 2: Convert to fraction form
    709.95/979.15 = 544.56/x
  3. Step 3: Cross multiply
    709.95x = 979.15 × 544.56
  4. Step 4: Simplify right side
    709.95x = 533,205.92
  5. Step 5: Solve for x
    x = 533,205.92/709.95
  6. Step 6: Final answer
    x = 751.05

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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.