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Finding the Fourth Proportional to 525.23, 787.99 and 251.31

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Solution

The fourth proportional to 525.23, 787.99 and 251.31 is: 377.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.23 : 787.99 = 251.31 : x
  2. Step 2: Convert to fraction form
    525.23/787.99 = 251.31/x
  3. Step 3: Cross multiply
    525.23x = 787.99 × 251.31
  4. Step 4: Simplify right side
    525.23x = 198,028.51
  5. Step 5: Solve for x
    x = 198,028.51/525.23
  6. Step 6: Final answer
    x = 377.03

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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.