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Finding the Fourth Proportional to 374.98, 561.95 and 191.99

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Solution

The fourth proportional to 374.98, 561.95 and 191.99 is: 287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.98 : 561.95 = 191.99 : x
  2. Step 2: Convert to fraction form
    374.98/561.95 = 191.99/x
  3. Step 3: Cross multiply
    374.98x = 561.95 × 191.99
  4. Step 4: Simplify right side
    374.98x = 107,887.14
  5. Step 5: Solve for x
    x = 107,887.14/374.98
  6. Step 6: Final answer
    x = 287.71

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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.