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Finding the Fourth Proportional to 240.44, 360.62 and 78.08

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Solution

The fourth proportional to 240.44, 360.62 and 78.08 is: 117.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.44 : 360.62 = 78.08 : x
  2. Step 2: Convert to fraction form
    240.44/360.62 = 78.08/x
  3. Step 3: Cross multiply
    240.44x = 360.62 × 78.08
  4. Step 4: Simplify right side
    240.44x = 28,157.21
  5. Step 5: Solve for x
    x = 28,157.21/240.44
  6. Step 6: Final answer
    x = 117.11

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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.