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Finding the Fourth Proportional to 370.71, 511.63 and 213.37

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Solution

The fourth proportional to 370.71, 511.63 and 213.37 is: 294.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.71 : 511.63 = 213.37 : x
  2. Step 2: Convert to fraction form
    370.71/511.63 = 213.37/x
  3. Step 3: Cross multiply
    370.71x = 511.63 × 213.37
  4. Step 4: Simplify right side
    370.71x = 109,166.49
  5. Step 5: Solve for x
    x = 109,166.49/370.71
  6. Step 6: Final answer
    x = 294.48

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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.