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Finding the Fourth Proportional to 245.29, 340.88 and 242.23

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Solution

The fourth proportional to 245.29, 340.88 and 242.23 is: 336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.29 : 340.88 = 242.23 : x
  2. Step 2: Convert to fraction form
    245.29/340.88 = 242.23/x
  3. Step 3: Cross multiply
    245.29x = 340.88 × 242.23
  4. Step 4: Simplify right side
    245.29x = 82,571.36
  5. Step 5: Solve for x
    x = 82,571.36/245.29
  6. Step 6: Final answer
    x = 336.63

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.