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Finding the Fourth Proportional to 371.64, 557.46 and 201.72

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Solution

The fourth proportional to 371.64, 557.46 and 201.72 is: 302.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.64 : 557.46 = 201.72 : x
  2. Step 2: Convert to fraction form
    371.64/557.46 = 201.72/x
  3. Step 3: Cross multiply
    371.64x = 557.46 × 201.72
  4. Step 4: Simplify right side
    371.64x = 112,450.83
  5. Step 5: Solve for x
    x = 112,450.83/371.64
  6. Step 6: Final answer
    x = 302.58

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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.