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Finding the Fourth Proportional to 709.25, 1,064.39 and 362.87

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Solution

The fourth proportional to 709.25, 1,064.39 and 362.87 is: 544.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.25 : 1,064.39 = 362.87 : x
  2. Step 2: Convert to fraction form
    709.25/1,064.39 = 362.87/x
  3. Step 3: Cross multiply
    709.25x = 1,064.39 × 362.87
  4. Step 4: Simplify right side
    709.25x = 386,237.09
  5. Step 5: Solve for x
    x = 386,237.09/709.25
  6. Step 6: Final answer
    x = 544.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.