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Finding the Fourth Proportional to 418.47, 577.43 and 252.62

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Solution

The fourth proportional to 418.47, 577.43 and 252.62 is: 348.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.47 : 577.43 = 252.62 : x
  2. Step 2: Convert to fraction form
    418.47/577.43 = 252.62/x
  3. Step 3: Cross multiply
    418.47x = 577.43 × 252.62
  4. Step 4: Simplify right side
    418.47x = 145,869.33
  5. Step 5: Solve for x
    x = 145,869.33/418.47
  6. Step 6: Final answer
    x = 348.58

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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.