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Finding the Fourth Proportional to 484.95, 727.39 and 279.39

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Solution

The fourth proportional to 484.95, 727.39 and 279.39 is: 419.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.95 : 727.39 = 279.39 : x
  2. Step 2: Convert to fraction form
    484.95/727.39 = 279.39/x
  3. Step 3: Cross multiply
    484.95x = 727.39 × 279.39
  4. Step 4: Simplify right side
    484.95x = 203,225.49
  5. Step 5: Solve for x
    x = 203,225.49/484.95
  6. Step 6: Final answer
    x = 419.06

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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.