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Finding the Fourth Proportional to 682.40, 940.94 and 496.51

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Solution

The fourth proportional to 682.40, 940.94 and 496.51 is: 684.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.40 : 940.94 = 496.51 : x
  2. Step 2: Convert to fraction form
    682.40/940.94 = 496.51/x
  3. Step 3: Cross multiply
    682.40x = 940.94 × 496.51
  4. Step 4: Simplify right side
    682.40x = 467,186.12
  5. Step 5: Solve for x
    x = 467,186.12/682.40
  6. Step 6: Final answer
    x = 684.62

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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.