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Finding the Fourth Proportional to 374.10, 561.39 and 200.90

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Solution

The fourth proportional to 374.10, 561.39 and 200.90 is: 301.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.10 : 561.39 = 200.90 : x
  2. Step 2: Convert to fraction form
    374.10/561.39 = 200.90/x
  3. Step 3: Cross multiply
    374.10x = 561.39 × 200.90
  4. Step 4: Simplify right side
    374.10x = 112,780.44
  5. Step 5: Solve for x
    x = 112,780.44/374.10
  6. Step 6: Final answer
    x = 301.47

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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.