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Finding the Fourth Proportional to 268.83, 370.71 and 213.48

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Solution

The fourth proportional to 268.83, 370.71 and 213.48 is: 294.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.83 : 370.71 = 213.48 : x
  2. Step 2: Convert to fraction form
    268.83/370.71 = 213.48/x
  3. Step 3: Cross multiply
    268.83x = 370.71 × 213.48
  4. Step 4: Simplify right side
    268.83x = 79,139.17
  5. Step 5: Solve for x
    x = 79,139.17/268.83
  6. Step 6: Final answer
    x = 294.38

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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.