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Finding the Fourth Proportional to 374.36, 561.01 and 191.36

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Solution

The fourth proportional to 374.36, 561.01 and 191.36 is: 286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.36 : 561.01 = 191.36 : x
  2. Step 2: Convert to fraction form
    374.36/561.01 = 191.36/x
  3. Step 3: Cross multiply
    374.36x = 561.01 × 191.36
  4. Step 4: Simplify right side
    374.36x = 107,356.69
  5. Step 5: Solve for x
    x = 107,356.69/374.36
  6. Step 6: Final answer
    x = 286.78

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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.