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Finding the Fourth Proportional to 371.36, 557.12 and 111.35

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Solution

The fourth proportional to 371.36, 557.12 and 111.35 is: 167.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.36 : 557.12 = 111.35 : x
  2. Step 2: Convert to fraction form
    371.36/557.12 = 111.35/x
  3. Step 3: Cross multiply
    371.36x = 557.12 × 111.35
  4. Step 4: Simplify right side
    371.36x = 62,035.31
  5. Step 5: Solve for x
    x = 62,035.31/371.36
  6. Step 6: Final answer
    x = 167.05

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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.