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Finding the Fourth Proportional to 419.69, 579.35 and 272.27

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Solution

The fourth proportional to 419.69, 579.35 and 272.27 is: 375.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.69 : 579.35 = 272.27 : x
  2. Step 2: Convert to fraction form
    419.69/579.35 = 272.27/x
  3. Step 3: Cross multiply
    419.69x = 579.35 × 272.27
  4. Step 4: Simplify right side
    419.69x = 157,739.62
  5. Step 5: Solve for x
    x = 157,739.62/419.69
  6. Step 6: Final answer
    x = 375.85

Related Problems

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Double scale
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1.5x scale

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.