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Finding the Fourth Proportional to 190.42, 285.89 and 97.95

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Solution

The fourth proportional to 190.42, 285.89 and 97.95 is: 147.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.42 : 285.89 = 97.95 : x
  2. Step 2: Convert to fraction form
    190.42/285.89 = 97.95/x
  3. Step 3: Cross multiply
    190.42x = 285.89 × 97.95
  4. Step 4: Simplify right side
    190.42x = 28,001.32
  5. Step 5: Solve for x
    x = 28,001.32/190.42
  6. Step 6: Final answer
    x = 147.05

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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.