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Finding the Fourth Proportional to 240.02, 330.41 and 215.45

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Solution

The fourth proportional to 240.02, 330.41 and 215.45 is: 296.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.02 : 330.41 = 215.45 : x
  2. Step 2: Convert to fraction form
    240.02/330.41 = 215.45/x
  3. Step 3: Cross multiply
    240.02x = 330.41 × 215.45
  4. Step 4: Simplify right side
    240.02x = 71,185.47
  5. Step 5: Solve for x
    x = 71,185.47/240.02
  6. Step 6: Final answer
    x = 296.58

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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.