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Finding the Fourth Proportional to 284.45, 427.01 and 239.36

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Solution

The fourth proportional to 284.45, 427.01 and 239.36 is: 359.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.45 : 427.01 = 239.36 : x
  2. Step 2: Convert to fraction form
    284.45/427.01 = 239.36/x
  3. Step 3: Cross multiply
    284.45x = 427.01 × 239.36
  4. Step 4: Simplify right side
    284.45x = 102,205.78
  5. Step 5: Solve for x
    x = 102,205.78/284.45
  6. Step 6: Final answer
    x = 359.32

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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.