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Finding the Fourth Proportional to 511.35, 766.80 and 203.10

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Solution

The fourth proportional to 511.35, 766.80 and 203.10 is: 304.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.35 : 766.80 = 203.10 : x
  2. Step 2: Convert to fraction form
    511.35/766.80 = 203.10/x
  3. Step 3: Cross multiply
    511.35x = 766.80 × 203.10
  4. Step 4: Simplify right side
    511.35x = 155,737.08
  5. Step 5: Solve for x
    x = 155,737.08/511.35
  6. Step 6: Final answer
    x = 304.56

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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.