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Finding the Fourth Proportional to 370.92, 556.44 and 127.45

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Solution

The fourth proportional to 370.92, 556.44 and 127.45 is: 191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.92 : 556.44 = 127.45 : x
  2. Step 2: Convert to fraction form
    370.92/556.44 = 127.45/x
  3. Step 3: Cross multiply
    370.92x = 556.44 × 127.45
  4. Step 4: Simplify right side
    370.92x = 70,918.28
  5. Step 5: Solve for x
    x = 70,918.28/370.92
  6. Step 6: Final answer
    x = 191.20

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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.