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Finding the Fourth Proportional to 207.36, 286.00 and 152.21

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Solution

The fourth proportional to 207.36, 286.00 and 152.21 is: 209.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.36 : 286.00 = 152.21 : x
  2. Step 2: Convert to fraction form
    207.36/286.00 = 152.21/x
  3. Step 3: Cross multiply
    207.36x = 286.00 × 152.21
  4. Step 4: Simplify right side
    207.36x = 43,532.39
  5. Step 5: Solve for x
    x = 43,532.39/207.36
  6. Step 6: Final answer
    x = 209.94

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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.