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Finding the Fourth Proportional to 338.93, 511.61 and 335.28

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Solution

The fourth proportional to 338.93, 511.61 and 335.28 is: 506.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.93 : 511.61 = 335.28 : x
  2. Step 2: Convert to fraction form
    338.93/511.61 = 335.28/x
  3. Step 3: Cross multiply
    338.93x = 511.61 × 335.28
  4. Step 4: Simplify right side
    338.93x = 171,533.76
  5. Step 5: Solve for x
    x = 171,533.76/338.93
  6. Step 6: Final answer
    x = 506.11

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.