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Finding the Fourth Proportional to 298.00, 411.18 and 187.62

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Solution

The fourth proportional to 298.00, 411.18 and 187.62 is: 258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.00 : 411.18 = 187.62 : x
  2. Step 2: Convert to fraction form
    298.00/411.18 = 187.62/x
  3. Step 3: Cross multiply
    298.00x = 411.18 × 187.62
  4. Step 4: Simplify right side
    298.00x = 77,146.06
  5. Step 5: Solve for x
    x = 77,146.06/298.00
  6. Step 6: Final answer
    x = 258.88

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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.