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Finding the Fourth Proportional to 370.56, 555.68 and 127.10

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Solution

The fourth proportional to 370.56, 555.68 and 127.10 is: 190.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.56 : 555.68 = 127.10 : x
  2. Step 2: Convert to fraction form
    370.56/555.68 = 127.10/x
  3. Step 3: Cross multiply
    370.56x = 555.68 × 127.10
  4. Step 4: Simplify right side
    370.56x = 70,626.93
  5. Step 5: Solve for x
    x = 70,626.93/370.56
  6. Step 6: Final answer
    x = 190.60

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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.