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Finding the Fourth Proportional to 419.15, 626.53 and 363.87

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Solution

The fourth proportional to 419.15, 626.53 and 363.87 is: 543.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.15 : 626.53 = 363.87 : x
  2. Step 2: Convert to fraction form
    419.15/626.53 = 363.87/x
  3. Step 3: Cross multiply
    419.15x = 626.53 × 363.87
  4. Step 4: Simplify right side
    419.15x = 227,974.56
  5. Step 5: Solve for x
    x = 227,974.56/419.15
  6. Step 6: Final answer
    x = 543.89

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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.