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Finding the Fourth Proportional to 371.63, 513.49 and 358.49

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Solution

The fourth proportional to 371.63, 513.49 and 358.49 is: 495.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.63 : 513.49 = 358.49 : x
  2. Step 2: Convert to fraction form
    371.63/513.49 = 358.49/x
  3. Step 3: Cross multiply
    371.63x = 513.49 × 358.49
  4. Step 4: Simplify right side
    371.63x = 184,081.03
  5. Step 5: Solve for x
    x = 184,081.03/371.63
  6. Step 6: Final answer
    x = 495.33

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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.