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Finding the Fourth Proportional to 484.40, 722.76 and 449.99

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Solution

The fourth proportional to 484.40, 722.76 and 449.99 is: 671.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.40 : 722.76 = 449.99 : x
  2. Step 2: Convert to fraction form
    484.40/722.76 = 449.99/x
  3. Step 3: Cross multiply
    484.40x = 722.76 × 449.99
  4. Step 4: Simplify right side
    484.40x = 325,232.52
  5. Step 5: Solve for x
    x = 325,232.52/484.40
  6. Step 6: Final answer
    x = 671.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.