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Finding the Fourth Proportional to 401.99, 602.79 and 196.32

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Solution

The fourth proportional to 401.99, 602.79 and 196.32 is: 294.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.99 : 602.79 = 196.32 : x
  2. Step 2: Convert to fraction form
    401.99/602.79 = 196.32/x
  3. Step 3: Cross multiply
    401.99x = 602.79 × 196.32
  4. Step 4: Simplify right side
    401.99x = 118,338.55
  5. Step 5: Solve for x
    x = 118,338.55/401.99
  6. Step 6: Final answer
    x = 294.38

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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.