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Finding the Fourth Proportional to 301.64, 415.78 and 246.28

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Solution

The fourth proportional to 301.64, 415.78 and 246.28 is: 339.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.64 : 415.78 = 246.28 : x
  2. Step 2: Convert to fraction form
    301.64/415.78 = 246.28/x
  3. Step 3: Cross multiply
    301.64x = 415.78 × 246.28
  4. Step 4: Simplify right side
    301.64x = 102,394.99
  5. Step 5: Solve for x
    x = 102,394.99/301.64
  6. Step 6: Final answer
    x = 339.47

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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.