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Finding the Fourth Proportional to 695.25, 1,043.01 and 310.50

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Solution

The fourth proportional to 695.25, 1,043.01 and 310.50 is: 465.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.25 : 1,043.01 = 310.50 : x
  2. Step 2: Convert to fraction form
    695.25/1,043.01 = 310.50/x
  3. Step 3: Cross multiply
    695.25x = 1,043.01 × 310.50
  4. Step 4: Simplify right side
    695.25x = 323,854.61
  5. Step 5: Solve for x
    x = 323,854.61/695.25
  6. Step 6: Final answer
    x = 465.81

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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.