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Finding the Fourth Proportional to 418.76, 577.76 and 271.27

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Solution

The fourth proportional to 418.76, 577.76 and 271.27 is: 374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.76 : 577.76 = 271.27 : x
  2. Step 2: Convert to fraction form
    418.76/577.76 = 271.27/x
  3. Step 3: Cross multiply
    418.76x = 577.76 × 271.27
  4. Step 4: Simplify right side
    418.76x = 156,726.15
  5. Step 5: Solve for x
    x = 156,726.15/418.76
  6. Step 6: Final answer
    x = 374.27

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Find fourth proportional to 209.38, 288.88 and 135.63
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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.