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Finding the Fourth Proportional to 302.79, 418.28 and 244.83

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Solution

The fourth proportional to 302.79, 418.28 and 244.83 is: 338.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.79 : 418.28 = 244.83 : x
  2. Step 2: Convert to fraction form
    302.79/418.28 = 244.83/x
  3. Step 3: Cross multiply
    302.79x = 418.28 × 244.83
  4. Step 4: Simplify right side
    302.79x = 102,406.27
  5. Step 5: Solve for x
    x = 102,406.27/302.79
  6. Step 6: Final answer
    x = 338.21

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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.