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Finding the Fourth Proportional to 1,025.82, 1,415.18 and 694.13

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Solution

The fourth proportional to 1,025.82, 1,415.18 and 694.13 is: 957.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.82 : 1,415.18 = 694.13 : x
  2. Step 2: Convert to fraction form
    1,025.82/1,415.18 = 694.13/x
  3. Step 3: Cross multiply
    1,025.82x = 1,415.18 × 694.13
  4. Step 4: Simplify right side
    1,025.82x = 982,318.89
  5. Step 5: Solve for x
    x = 982,318.89/1,025.82
  6. Step 6: Final answer
    x = 957.59

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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.