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Finding the Fourth Proportional to 353.73, 529.78 and 256.35

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Solution

The fourth proportional to 353.73, 529.78 and 256.35 is: 383.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.73 : 529.78 = 256.35 : x
  2. Step 2: Convert to fraction form
    353.73/529.78 = 256.35/x
  3. Step 3: Cross multiply
    353.73x = 529.78 × 256.35
  4. Step 4: Simplify right side
    353.73x = 135,809.10
  5. Step 5: Solve for x
    x = 135,809.10/353.73
  6. Step 6: Final answer
    x = 383.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.