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Finding the Fourth Proportional to 449.89, 621.07 and 350.11

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Solution

The fourth proportional to 449.89, 621.07 and 350.11 is: 483.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.89 : 621.07 = 350.11 : x
  2. Step 2: Convert to fraction form
    449.89/621.07 = 350.11/x
  3. Step 3: Cross multiply
    449.89x = 621.07 × 350.11
  4. Step 4: Simplify right side
    449.89x = 217,441.07
  5. Step 5: Solve for x
    x = 217,441.07/449.89
  6. Step 6: Final answer
    x = 483.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.