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Finding the Fourth Proportional to 787.25, 1,181.01 and 239.37

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Solution

The fourth proportional to 787.25, 1,181.01 and 239.37 is: 359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    787.25 : 1,181.01 = 239.37 : x
  2. Step 2: Convert to fraction form
    787.25/1,181.01 = 239.37/x
  3. Step 3: Cross multiply
    787.25x = 1,181.01 × 239.37
  4. Step 4: Simplify right side
    787.25x = 282,698.36
  5. Step 5: Solve for x
    x = 282,698.36/787.25
  6. Step 6: Final answer
    x = 359.10

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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.