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Finding the Fourth Proportional to 419.99, 626.27 and 362.61

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Solution

The fourth proportional to 419.99, 626.27 and 362.61 is: 540.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.99 : 626.27 = 362.61 : x
  2. Step 2: Convert to fraction form
    419.99/626.27 = 362.61/x
  3. Step 3: Cross multiply
    419.99x = 626.27 × 362.61
  4. Step 4: Simplify right side
    419.99x = 227,089.95
  5. Step 5: Solve for x
    x = 227,089.95/419.99
  6. Step 6: Final answer
    x = 540.71

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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.