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Finding the Fourth Proportional to 388.02, 534.30 and 335.47

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Solution

The fourth proportional to 388.02, 534.30 and 335.47 is: 461.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.02 : 534.30 = 335.47 : x
  2. Step 2: Convert to fraction form
    388.02/534.30 = 335.47/x
  3. Step 3: Cross multiply
    388.02x = 534.30 × 335.47
  4. Step 4: Simplify right side
    388.02x = 179,240.29
  5. Step 5: Solve for x
    x = 179,240.29/388.02
  6. Step 6: Final answer
    x = 461.94

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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.