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Finding the Fourth Proportional to 799.82, 1,199.93 and 252.01

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Solution

The fourth proportional to 799.82, 1,199.93 and 252.01 is: 378.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.82 : 1,199.93 = 252.01 : x
  2. Step 2: Convert to fraction form
    799.82/1,199.93 = 252.01/x
  3. Step 3: Cross multiply
    799.82x = 1,199.93 × 252.01
  4. Step 4: Simplify right side
    799.82x = 302,394.99
  5. Step 5: Solve for x
    x = 302,394.99/799.82
  6. Step 6: Final answer
    x = 378.08

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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.