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Finding the Fourth Proportional to 637.16, 879.14 and 371.56

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Solution

The fourth proportional to 637.16, 879.14 and 371.56 is: 512.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.16 : 879.14 = 371.56 : x
  2. Step 2: Convert to fraction form
    637.16/879.14 = 371.56/x
  3. Step 3: Cross multiply
    637.16x = 879.14 × 371.56
  4. Step 4: Simplify right side
    637.16x = 326,653.26
  5. Step 5: Solve for x
    x = 326,653.26/637.16
  6. Step 6: Final answer
    x = 512.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.