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Finding the Fourth Proportional to 374.08, 559.74 and 220.07

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Solution

The fourth proportional to 374.08, 559.74 and 220.07 is: 329.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.08 : 559.74 = 220.07 : x
  2. Step 2: Convert to fraction form
    374.08/559.74 = 220.07/x
  3. Step 3: Cross multiply
    374.08x = 559.74 × 220.07
  4. Step 4: Simplify right side
    374.08x = 123,183.93
  5. Step 5: Solve for x
    x = 123,183.93/374.08
  6. Step 6: Final answer
    x = 329.30

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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.