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Finding the Fourth Proportional to 499.80, 751.32 and 448.68

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Solution

The fourth proportional to 499.80, 751.32 and 448.68 is: 674.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.80 : 751.32 = 448.68 : x
  2. Step 2: Convert to fraction form
    499.80/751.32 = 448.68/x
  3. Step 3: Cross multiply
    499.80x = 751.32 × 448.68
  4. Step 4: Simplify right side
    499.80x = 337,102.26
  5. Step 5: Solve for x
    x = 337,102.26/499.80
  6. Step 6: Final answer
    x = 674.47

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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.