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Finding the Fourth Proportional to 260.19, 358.98 and 149.67

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Solution

The fourth proportional to 260.19, 358.98 and 149.67 is: 206.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.19 : 358.98 = 149.67 : x
  2. Step 2: Convert to fraction form
    260.19/358.98 = 149.67/x
  3. Step 3: Cross multiply
    260.19x = 358.98 × 149.67
  4. Step 4: Simplify right side
    260.19x = 53,728.54
  5. Step 5: Solve for x
    x = 53,728.54/260.19
  6. Step 6: Final answer
    x = 206.50

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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.