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Finding the Fourth Proportional to 240.18, 358.30 and 201.91

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Solution

The fourth proportional to 240.18, 358.30 and 201.91 is: 301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.18 : 358.30 = 201.91 : x
  2. Step 2: Convert to fraction form
    240.18/358.30 = 201.91/x
  3. Step 3: Cross multiply
    240.18x = 358.30 × 201.91
  4. Step 4: Simplify right side
    240.18x = 72,342.95
  5. Step 5: Solve for x
    x = 72,342.95/240.18
  6. Step 6: Final answer
    x = 301.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.