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Finding the Fourth Proportional to 287.01, 396.08 and 168.99

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Solution

The fourth proportional to 287.01, 396.08 and 168.99 is: 233.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.01 : 396.08 = 168.99 : x
  2. Step 2: Convert to fraction form
    287.01/396.08 = 168.99/x
  3. Step 3: Cross multiply
    287.01x = 396.08 × 168.99
  4. Step 4: Simplify right side
    287.01x = 66,932.71
  5. Step 5: Solve for x
    x = 66,932.71/287.01
  6. Step 6: Final answer
    x = 233.21

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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.