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Finding the Fourth Proportional to 349.65, 524.07 and 144.05

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Solution

The fourth proportional to 349.65, 524.07 and 144.05 is: 215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.65 : 524.07 = 144.05 : x
  2. Step 2: Convert to fraction form
    349.65/524.07 = 144.05/x
  3. Step 3: Cross multiply
    349.65x = 524.07 × 144.05
  4. Step 4: Simplify right side
    349.65x = 75,489.66
  5. Step 5: Solve for x
    x = 75,489.66/349.65
  6. Step 6: Final answer
    x = 215.90

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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.