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Finding the Fourth Proportional to 163.91, 246.21 and 158.45

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Solution

The fourth proportional to 163.91, 246.21 and 158.45 is: 238.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.91 : 246.21 = 158.45 : x
  2. Step 2: Convert to fraction form
    163.91/246.21 = 158.45/x
  3. Step 3: Cross multiply
    163.91x = 246.21 × 158.45
  4. Step 4: Simplify right side
    163.91x = 39,009.95
  5. Step 5: Solve for x
    x = 39,009.95/163.91
  6. Step 6: Final answer
    x = 238.00

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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.