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Finding the Fourth Proportional to 452.09, 623.89 and 245.09

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Solution

The fourth proportional to 452.09, 623.89 and 245.09 is: 338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.09 : 623.89 = 245.09 : x
  2. Step 2: Convert to fraction form
    452.09/623.89 = 245.09/x
  3. Step 3: Cross multiply
    452.09x = 623.89 × 245.09
  4. Step 4: Simplify right side
    452.09x = 152,911.54
  5. Step 5: Solve for x
    x = 152,911.54/452.09
  6. Step 6: Final answer
    x = 338.23

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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.