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Finding the Fourth Proportional to 388.14, 534.47 and 335.59

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Solution

The fourth proportional to 388.14, 534.47 and 335.59 is: 462.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.14 : 534.47 = 335.59 : x
  2. Step 2: Convert to fraction form
    388.14/534.47 = 335.59/x
  3. Step 3: Cross multiply
    388.14x = 534.47 × 335.59
  4. Step 4: Simplify right side
    388.14x = 179,362.79
  5. Step 5: Solve for x
    x = 179,362.79/388.14
  6. Step 6: Final answer
    x = 462.11

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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.