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Finding the Fourth Proportional to 388.04, 532.21 and 344.30

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Solution

The fourth proportional to 388.04, 532.21 and 344.30 is: 472.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.04 : 532.21 = 344.30 : x
  2. Step 2: Convert to fraction form
    388.04/532.21 = 344.30/x
  3. Step 3: Cross multiply
    388.04x = 532.21 × 344.30
  4. Step 4: Simplify right side
    388.04x = 183,236.38
  5. Step 5: Solve for x
    x = 183,236.38/388.04
  6. Step 6: Final answer
    x = 472.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.