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Finding the Fourth Proportional to 303.62, 419.57 and 248.34

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Solution

The fourth proportional to 303.62, 419.57 and 248.34 is: 343.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.62 : 419.57 = 248.34 : x
  2. Step 2: Convert to fraction form
    303.62/419.57 = 248.34/x
  3. Step 3: Cross multiply
    303.62x = 419.57 × 248.34
  4. Step 4: Simplify right side
    303.62x = 104,196.01
  5. Step 5: Solve for x
    x = 104,196.01/303.62
  6. Step 6: Final answer
    x = 343.18

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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.