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Finding the Fourth Proportional to 577.03, 865.71 and 247.80

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Solution

The fourth proportional to 577.03, 865.71 and 247.80 is: 371.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.03 : 865.71 = 247.80 : x
  2. Step 2: Convert to fraction form
    577.03/865.71 = 247.80/x
  3. Step 3: Cross multiply
    577.03x = 865.71 × 247.80
  4. Step 4: Simplify right side
    577.03x = 214,524.70
  5. Step 5: Solve for x
    x = 214,524.70/577.03
  6. Step 6: Final answer
    x = 371.77

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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.