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Finding the Fourth Proportional to 216.51, 323.04 and 203.38

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Solution

The fourth proportional to 216.51, 323.04 and 203.38 is: 303.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.51 : 323.04 = 203.38 : x
  2. Step 2: Convert to fraction form
    216.51/323.04 = 203.38/x
  3. Step 3: Cross multiply
    216.51x = 323.04 × 203.38
  4. Step 4: Simplify right side
    216.51x = 65,698.77
  5. Step 5: Solve for x
    x = 65,698.77/216.51
  6. Step 6: Final answer
    x = 303.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.