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Finding the Fourth Proportional to 245.04, 367.83 and 221.28

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Solution

The fourth proportional to 245.04, 367.83 and 221.28 is: 332.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.04 : 367.83 = 221.28 : x
  2. Step 2: Convert to fraction form
    245.04/367.83 = 221.28/x
  3. Step 3: Cross multiply
    245.04x = 367.83 × 221.28
  4. Step 4: Simplify right side
    245.04x = 81,393.42
  5. Step 5: Solve for x
    x = 81,393.42/245.04
  6. Step 6: Final answer
    x = 332.16

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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.