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Finding the Fourth Proportional to 190.90, 286.49 and 153.93

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Solution

The fourth proportional to 190.90, 286.49 and 153.93 is: 231.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.90 : 286.49 = 153.93 : x
  2. Step 2: Convert to fraction form
    190.90/286.49 = 153.93/x
  3. Step 3: Cross multiply
    190.90x = 286.49 × 153.93
  4. Step 4: Simplify right side
    190.90x = 44,098.19
  5. Step 5: Solve for x
    x = 44,098.19/190.90
  6. Step 6: Final answer
    x = 231.00

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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.