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Finding the Fourth Proportional to 304.95, 456.33 and 189.30

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Solution

The fourth proportional to 304.95, 456.33 and 189.30 is: 283.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.95 : 456.33 = 189.30 : x
  2. Step 2: Convert to fraction form
    304.95/456.33 = 189.30/x
  3. Step 3: Cross multiply
    304.95x = 456.33 × 189.30
  4. Step 4: Simplify right side
    304.95x = 86,380.99
  5. Step 5: Solve for x
    x = 86,380.99/304.95
  6. Step 6: Final answer
    x = 283.27

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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.