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Finding the Fourth Proportional to 399.32, 551.00 and 233.43

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Solution

The fourth proportional to 399.32, 551.00 and 233.43 is: 322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.32 : 551.00 = 233.43 : x
  2. Step 2: Convert to fraction form
    399.32/551.00 = 233.43/x
  3. Step 3: Cross multiply
    399.32x = 551.00 × 233.43
  4. Step 4: Simplify right side
    399.32x = 128,621.55
  5. Step 5: Solve for x
    x = 128,621.55/399.32
  6. Step 6: Final answer
    x = 322.10

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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.