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Finding the Fourth Proportional to 299.04, 448.61 and 103.98

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Solution

The fourth proportional to 299.04, 448.61 and 103.98 is: 155.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.04 : 448.61 = 103.98 : x
  2. Step 2: Convert to fraction form
    299.04/448.61 = 103.98/x
  3. Step 3: Cross multiply
    299.04x = 448.61 × 103.98
  4. Step 4: Simplify right side
    299.04x = 46,645.95
  5. Step 5: Solve for x
    x = 46,645.95/299.04
  6. Step 6: Final answer
    x = 155.99

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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.