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Finding the Fourth Proportional to 418.25, 577.19 and 263.27

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Solution

The fourth proportional to 418.25, 577.19 and 263.27 is: 363.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.25 : 577.19 = 263.27 : x
  2. Step 2: Convert to fraction form
    418.25/577.19 = 263.27/x
  3. Step 3: Cross multiply
    418.25x = 577.19 × 263.27
  4. Step 4: Simplify right side
    418.25x = 151,956.81
  5. Step 5: Solve for x
    x = 151,956.81/418.25
  6. Step 6: Final answer
    x = 363.32

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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.