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Finding the Fourth Proportional to 524.72, 787.21 and 159.51

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Solution

The fourth proportional to 524.72, 787.21 and 159.51 is: 239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.72 : 787.21 = 159.51 : x
  2. Step 2: Convert to fraction form
    524.72/787.21 = 159.51/x
  3. Step 3: Cross multiply
    524.72x = 787.21 × 159.51
  4. Step 4: Simplify right side
    524.72x = 125,567.47
  5. Step 5: Solve for x
    x = 125,567.47/524.72
  6. Step 6: Final answer
    x = 239.30

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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.