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Finding the Fourth Proportional to 484.84, 726.62 and 279.30

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Solution

The fourth proportional to 484.84, 726.62 and 279.30 is: 418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.84 : 726.62 = 279.30 : x
  2. Step 2: Convert to fraction form
    484.84/726.62 = 279.30/x
  3. Step 3: Cross multiply
    484.84x = 726.62 × 279.30
  4. Step 4: Simplify right side
    484.84x = 202,943.78
  5. Step 5: Solve for x
    x = 202,943.78/484.84
  6. Step 6: Final answer
    x = 418.58

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