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Finding the Fourth Proportional to 301.04, 415.68 and 239.21

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Solution

The fourth proportional to 301.04, 415.68 and 239.21 is: 330.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.04 : 415.68 = 239.21 : x
  2. Step 2: Convert to fraction form
    301.04/415.68 = 239.21/x
  3. Step 3: Cross multiply
    301.04x = 415.68 × 239.21
  4. Step 4: Simplify right side
    301.04x = 99,434.81
  5. Step 5: Solve for x
    x = 99,434.81/301.04
  6. Step 6: Final answer
    x = 330.30

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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.