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Finding the Fourth Proportional to 164.68, 227.25 and 90.99

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Solution

The fourth proportional to 164.68, 227.25 and 90.99 is: 125.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.68 : 227.25 = 90.99 : x
  2. Step 2: Convert to fraction form
    164.68/227.25 = 90.99/x
  3. Step 3: Cross multiply
    164.68x = 227.25 × 90.99
  4. Step 4: Simplify right side
    164.68x = 20,677.95
  5. Step 5: Solve for x
    x = 20,677.95/164.68
  6. Step 6: Final answer
    x = 125.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.