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Finding the Fourth Proportional to 1,695.42, 2,542.17 and 525.09

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Solution

The fourth proportional to 1,695.42, 2,542.17 and 525.09 is: 787.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.42 : 2,542.17 = 525.09 : x
  2. Step 2: Convert to fraction form
    1,695.42/2,542.17 = 525.09/x
  3. Step 3: Cross multiply
    1,695.42x = 2,542.17 × 525.09
  4. Step 4: Simplify right side
    1,695.42x = 1,334,868.05
  5. Step 5: Solve for x
    x = 1,334,868.05/1,695.42
  6. Step 6: Final answer
    x = 787.34

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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.