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Finding the Fourth Proportional to 419.54, 578.90 and 335.59

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Solution

The fourth proportional to 419.54, 578.90 and 335.59 is: 463.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.54 : 578.90 = 335.59 : x
  2. Step 2: Convert to fraction form
    419.54/578.90 = 335.59/x
  3. Step 3: Cross multiply
    419.54x = 578.90 × 335.59
  4. Step 4: Simplify right side
    419.54x = 194,272.44
  5. Step 5: Solve for x
    x = 194,272.44/419.54
  6. Step 6: Final answer
    x = 463.07

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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.