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Finding the Fourth Proportional to 370.44, 511.09 and 215.16

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Solution

The fourth proportional to 370.44, 511.09 and 215.16 is: 296.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    370.44 : 511.09 = 215.16 : x
  2. Step 2: Convert to fraction form
    370.44/511.09 = 215.16/x
  3. Step 3: Cross multiply
    370.44x = 511.09 × 215.16
  4. Step 4: Simplify right side
    370.44x = 109,963.03
  5. Step 5: Solve for x
    x = 109,963.03/370.44
  6. Step 6: Final answer
    x = 296.85

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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.