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Finding the Fourth Proportional to 371.83, 513.06 and 253.90

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Solution

The fourth proportional to 371.83, 513.06 and 253.90 is: 350.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.83 : 513.06 = 253.90 : x
  2. Step 2: Convert to fraction form
    371.83/513.06 = 253.90/x
  3. Step 3: Cross multiply
    371.83x = 513.06 × 253.90
  4. Step 4: Simplify right side
    371.83x = 130,265.93
  5. Step 5: Solve for x
    x = 130,265.93/371.83
  6. Step 6: Final answer
    x = 350.34

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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.