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Finding the Fourth Proportional to 190.60, 285.88 and 75.08

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Solution

The fourth proportional to 190.60, 285.88 and 75.08 is: 112.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.60 : 285.88 = 75.08 : x
  2. Step 2: Convert to fraction form
    190.60/285.88 = 75.08/x
  3. Step 3: Cross multiply
    190.60x = 285.88 × 75.08
  4. Step 4: Simplify right side
    190.60x = 21,462.93
  5. Step 5: Solve for x
    x = 21,462.93/190.60
  6. Step 6: Final answer
    x = 112.61

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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.