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Finding the Fourth Proportional to 245.09, 367.74 and 115.00

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Solution

The fourth proportional to 245.09, 367.74 and 115.00 is: 172.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.09 : 367.74 = 115.00 : x
  2. Step 2: Convert to fraction form
    245.09/367.74 = 115.00/x
  3. Step 3: Cross multiply
    245.09x = 367.74 × 115.00
  4. Step 4: Simplify right side
    245.09x = 42,289.18
  5. Step 5: Solve for x
    x = 42,289.18/245.09
  6. Step 6: Final answer
    x = 172.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.