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Finding the Fourth Proportional to 370.53, 511.27 and 213.18

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Solution

The fourth proportional to 370.53, 511.27 and 213.18 is: 294.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.53 : 511.27 = 213.18 : x
  2. Step 2: Convert to fraction form
    370.53/511.27 = 213.18/x
  3. Step 3: Cross multiply
    370.53x = 511.27 × 213.18
  4. Step 4: Simplify right side
    370.53x = 108,992.54
  5. Step 5: Solve for x
    x = 108,992.54/370.53
  6. Step 6: Final answer
    x = 294.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.