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Finding the Fourth Proportional to 828.09, 1,141.49 and 695.25

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Solution

The fourth proportional to 828.09, 1,141.49 and 695.25 is: 958.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.09 : 1,141.49 = 695.25 : x
  2. Step 2: Convert to fraction form
    828.09/1,141.49 = 695.25/x
  3. Step 3: Cross multiply
    828.09x = 1,141.49 × 695.25
  4. Step 4: Simplify right side
    828.09x = 793,622.66
  5. Step 5: Solve for x
    x = 793,622.66/828.09
  6. Step 6: Final answer
    x = 958.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.