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Finding the Fourth Proportional to 687.05, 941.94 and 674.75

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Solution

The fourth proportional to 687.05, 941.94 and 674.75 is: 925.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    687.05 : 941.94 = 674.75 : x
  2. Step 2: Convert to fraction form
    687.05/941.94 = 674.75/x
  3. Step 3: Cross multiply
    687.05x = 941.94 × 674.75
  4. Step 4: Simplify right side
    687.05x = 635,574.02
  5. Step 5: Solve for x
    x = 635,574.02/687.05
  6. Step 6: Final answer
    x = 925.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.