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Finding the Fourth Proportional to 353.04, 528.87 and 198.72

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Solution

The fourth proportional to 353.04, 528.87 and 198.72 is: 297.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.04 : 528.87 = 198.72 : x
  2. Step 2: Convert to fraction form
    353.04/528.87 = 198.72/x
  3. Step 3: Cross multiply
    353.04x = 528.87 × 198.72
  4. Step 4: Simplify right side
    353.04x = 105,097.05
  5. Step 5: Solve for x
    x = 105,097.05/353.04
  6. Step 6: Final answer
    x = 297.69

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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.