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Finding the Fourth Proportional to 355.49, 533.30 and 201.63

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Solution

The fourth proportional to 355.49, 533.30 and 201.63 is: 302.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.49 : 533.30 = 201.63 : x
  2. Step 2: Convert to fraction form
    355.49/533.30 = 201.63/x
  3. Step 3: Cross multiply
    355.49x = 533.30 × 201.63
  4. Step 4: Simplify right side
    355.49x = 107,528.27
  5. Step 5: Solve for x
    x = 107,528.27/355.49
  6. Step 6: Final answer
    x = 302.48

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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.