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Finding the Fourth Proportional to 252.15, 377.99 and 215.01

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Solution

The fourth proportional to 252.15, 377.99 and 215.01 is: 322.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.15 : 377.99 = 215.01 : x
  2. Step 2: Convert to fraction form
    252.15/377.99 = 215.01/x
  3. Step 3: Cross multiply
    252.15x = 377.99 × 215.01
  4. Step 4: Simplify right side
    252.15x = 81,273.03
  5. Step 5: Solve for x
    x = 81,273.03/252.15
  6. Step 6: Final answer
    x = 322.32

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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.