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Finding the Fourth Proportional to 240.39, 360.45 and 103.35

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Solution

The fourth proportional to 240.39, 360.45 and 103.35 is: 154.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.39 : 360.45 = 103.35 : x
  2. Step 2: Convert to fraction form
    240.39/360.45 = 103.35/x
  3. Step 3: Cross multiply
    240.39x = 360.45 × 103.35
  4. Step 4: Simplify right side
    240.39x = 37,252.51
  5. Step 5: Solve for x
    x = 37,252.51/240.39
  6. Step 6: Final answer
    x = 154.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.