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Finding the Fourth Proportional to 240.64, 360.74 and 148.15

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Solution

The fourth proportional to 240.64, 360.74 and 148.15 is: 222.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.64 : 360.74 = 148.15 : x
  2. Step 2: Convert to fraction form
    240.64/360.74 = 148.15/x
  3. Step 3: Cross multiply
    240.64x = 360.74 × 148.15
  4. Step 4: Simplify right side
    240.64x = 53,443.62
  5. Step 5: Solve for x
    x = 53,443.62/240.64
  6. Step 6: Final answer
    x = 222.09

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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.