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Finding the Fourth Proportional to 525.17, 787.70 and 379.61

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Solution

The fourth proportional to 525.17, 787.70 and 379.61 is: 569.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.17 : 787.70 = 379.61 : x
  2. Step 2: Convert to fraction form
    525.17/787.70 = 379.61/x
  3. Step 3: Cross multiply
    525.17x = 787.70 × 379.61
  4. Step 4: Simplify right side
    525.17x = 299,012.96
  5. Step 5: Solve for x
    x = 299,012.96/525.17
  6. Step 6: Final answer
    x = 569.37

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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.