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Finding the Fourth Proportional to 349.65, 481.55 and 279.59

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Solution

The fourth proportional to 349.65, 481.55 and 279.59 is: 385.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.65 : 481.55 = 279.59 : x
  2. Step 2: Convert to fraction form
    349.65/481.55 = 279.59/x
  3. Step 3: Cross multiply
    349.65x = 481.55 × 279.59
  4. Step 4: Simplify right side
    349.65x = 134,632.76
  5. Step 5: Solve for x
    x = 134,632.76/349.65
  6. Step 6: Final answer
    x = 385.05

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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.