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Finding the Fourth Proportional to 419.68, 579.42 and 375.94

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Solution

The fourth proportional to 419.68, 579.42 and 375.94 is: 519.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.68 : 579.42 = 375.94 : x
  2. Step 2: Convert to fraction form
    419.68/579.42 = 375.94/x
  3. Step 3: Cross multiply
    419.68x = 579.42 × 375.94
  4. Step 4: Simplify right side
    419.68x = 217,827.15
  5. Step 5: Solve for x
    x = 217,827.15/419.68
  6. Step 6: Final answer
    x = 519.03

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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.