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Finding the Fourth Proportional to 339.49, 468.52 and 256.47

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Solution

The fourth proportional to 339.49, 468.52 and 256.47 is: 353.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.49 : 468.52 = 256.47 : x
  2. Step 2: Convert to fraction form
    339.49/468.52 = 256.47/x
  3. Step 3: Cross multiply
    339.49x = 468.52 × 256.47
  4. Step 4: Simplify right side
    339.49x = 120,158.93
  5. Step 5: Solve for x
    x = 120,158.93/339.49
  6. Step 6: Final answer
    x = 353.94

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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.