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Finding the Fourth Proportional to 695.01, 1,043.12 and 361.70

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Solution

The fourth proportional to 695.01, 1,043.12 and 361.70 is: 542.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.01 : 1,043.12 = 361.70 : x
  2. Step 2: Convert to fraction form
    695.01/1,043.12 = 361.70/x
  3. Step 3: Cross multiply
    695.01x = 1,043.12 × 361.70
  4. Step 4: Simplify right side
    695.01x = 377,289.48
  5. Step 5: Solve for x
    x = 377,289.48/695.01
  6. Step 6: Final answer
    x = 542.85

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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.