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Finding the Fourth Proportional to 534.54, 800.78 and 351.38

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Solution

The fourth proportional to 534.54, 800.78 and 351.38 is: 526.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.54 : 800.78 = 351.38 : x
  2. Step 2: Convert to fraction form
    534.54/800.78 = 351.38/x
  3. Step 3: Cross multiply
    534.54x = 800.78 × 351.38
  4. Step 4: Simplify right side
    534.54x = 281,378.08
  5. Step 5: Solve for x
    x = 281,378.08/534.54
  6. Step 6: Final answer
    x = 526.39

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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.