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Finding the Fourth Proportional to 356.68, 493.32 and 338.47

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Solution

The fourth proportional to 356.68, 493.32 and 338.47 is: 468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.68 : 493.32 = 338.47 : x
  2. Step 2: Convert to fraction form
    356.68/493.32 = 338.47/x
  3. Step 3: Cross multiply
    356.68x = 493.32 × 338.47
  4. Step 4: Simplify right side
    356.68x = 166,974.02
  5. Step 5: Solve for x
    x = 166,974.02/356.68
  6. Step 6: Final answer
    x = 468.13

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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.