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Finding the Fourth Proportional to 289.39, 433.63 and 224.55

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Solution

The fourth proportional to 289.39, 433.63 and 224.55 is: 336.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.39 : 433.63 = 224.55 : x
  2. Step 2: Convert to fraction form
    289.39/433.63 = 224.55/x
  3. Step 3: Cross multiply
    289.39x = 433.63 × 224.55
  4. Step 4: Simplify right side
    289.39x = 97,371.62
  5. Step 5: Solve for x
    x = 97,371.62/289.39
  6. Step 6: Final answer
    x = 336.47

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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.