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Finding the Fourth Proportional to 388.38, 532.08 and 373.80

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Solution

The fourth proportional to 388.38, 532.08 and 373.80 is: 512.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.38 : 532.08 = 373.80 : x
  2. Step 2: Convert to fraction form
    388.38/532.08 = 373.80/x
  3. Step 3: Cross multiply
    388.38x = 532.08 × 373.80
  4. Step 4: Simplify right side
    388.38x = 198,891.50
  5. Step 5: Solve for x
    x = 198,891.50/388.38
  6. Step 6: Final answer
    x = 512.11

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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.