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Finding the Fourth Proportional to 245.19, 365.57 and 238.88

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Solution

The fourth proportional to 245.19, 365.57 and 238.88 is: 356.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.19 : 365.57 = 238.88 : x
  2. Step 2: Convert to fraction form
    245.19/365.57 = 238.88/x
  3. Step 3: Cross multiply
    245.19x = 365.57 × 238.88
  4. Step 4: Simplify right side
    245.19x = 87,324.34
  5. Step 5: Solve for x
    x = 87,324.34/245.19
  6. Step 6: Final answer
    x = 356.15

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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.