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Finding the Fourth Proportional to 370.60, 555.10 and 216.38

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Solution

The fourth proportional to 370.60, 555.10 and 216.38 is: 324.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.60 : 555.10 = 216.38 : x
  2. Step 2: Convert to fraction form
    370.60/555.10 = 216.38/x
  3. Step 3: Cross multiply
    370.60x = 555.10 × 216.38
  4. Step 4: Simplify right side
    370.60x = 120,113.38
  5. Step 5: Solve for x
    x = 120,113.38/370.60
  6. Step 6: Final answer
    x = 324.11

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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.