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Finding the Fourth Proportional to 374.37, 561.04 and 191.38

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Solution

The fourth proportional to 374.37, 561.04 and 191.38 is: 286.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.37 : 561.04 = 191.38 : x
  2. Step 2: Convert to fraction form
    374.37/561.04 = 191.38/x
  3. Step 3: Cross multiply
    374.37x = 561.04 × 191.38
  4. Step 4: Simplify right side
    374.37x = 107,371.84
  5. Step 5: Solve for x
    x = 107,371.84/374.37
  6. Step 6: Final answer
    x = 286.81

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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.