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Finding the Fourth Proportional to 190.61, 286 and 104.02

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Solution

The fourth proportional to 190.61, 286 and 104.02 is: 156.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    190.61 : 286 = 104.02 : x
  2. Step 2: Convert to fraction form
    190.61/286 = 104.02/x
  3. Step 3: Cross multiply
    190.61x = 286 × 104.02
  4. Step 4: Simplify right side
    190.61x = 29,749.72
  5. Step 5: Solve for x
    x = 29,749.72/190.61
  6. Step 6: Final answer
    x = 156.08

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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.