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Finding the Fourth Proportional to 370.76, 556.08 and 216.20

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Solution

The fourth proportional to 370.76, 556.08 and 216.20 is: 324.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.76 : 556.08 = 216.20 : x
  2. Step 2: Convert to fraction form
    370.76/556.08 = 216.20/x
  3. Step 3: Cross multiply
    370.76x = 556.08 × 216.20
  4. Step 4: Simplify right side
    370.76x = 120,224.50
  5. Step 5: Solve for x
    x = 120,224.50/370.76
  6. Step 6: Final answer
    x = 324.27

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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.