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Finding the Fourth Proportional to 189.54, 282.63 and 189.18

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Solution

The fourth proportional to 189.54, 282.63 and 189.18 is: 282.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.54 : 282.63 = 189.18 : x
  2. Step 2: Convert to fraction form
    189.54/282.63 = 189.18/x
  3. Step 3: Cross multiply
    189.54x = 282.63 × 189.18
  4. Step 4: Simplify right side
    189.54x = 53,467.00
  5. Step 5: Solve for x
    x = 53,467.00/189.54
  6. Step 6: Final answer
    x = 282.09

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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.