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Finding the Fourth Proportional to 299.93, 449.91 and 104.93

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Solution

The fourth proportional to 299.93, 449.91 and 104.93 is: 157.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    299.93 : 449.91 = 104.93 : x
  2. Step 2: Convert to fraction form
    299.93/449.91 = 104.93/x
  3. Step 3: Cross multiply
    299.93x = 449.91 × 104.93
  4. Step 4: Simplify right side
    299.93x = 47,209.06
  5. Step 5: Solve for x
    x = 47,209.06/299.93
  6. Step 6: Final answer
    x = 157.40

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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.