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Finding the Fourth Proportional to 370.63, 555.34 and 127.03

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Solution

The fourth proportional to 370.63, 555.34 and 127.03 is: 190.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.63 : 555.34 = 127.03 : x
  2. Step 2: Convert to fraction form
    370.63/555.34 = 127.03/x
  3. Step 3: Cross multiply
    370.63x = 555.34 × 127.03
  4. Step 4: Simplify right side
    370.63x = 70,542.06
  5. Step 5: Solve for x
    x = 70,542.06/370.63
  6. Step 6: Final answer
    x = 190.33

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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.