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Finding the Fourth Proportional to 189.36, 282.56 and 169.83

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Solution

The fourth proportional to 189.36, 282.56 and 169.83 is: 253.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.36 : 282.56 = 169.83 : x
  2. Step 2: Convert to fraction form
    189.36/282.56 = 169.83/x
  3. Step 3: Cross multiply
    189.36x = 282.56 × 169.83
  4. Step 4: Simplify right side
    189.36x = 47,986.32
  5. Step 5: Solve for x
    x = 47,986.32/189.36
  6. Step 6: Final answer
    x = 253.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.