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Finding the Fourth Proportional to 681.50, 941.69 and 504.21

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Solution

The fourth proportional to 681.50, 941.69 and 504.21 is: 696.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.50 : 941.69 = 504.21 : x
  2. Step 2: Convert to fraction form
    681.50/941.69 = 504.21/x
  3. Step 3: Cross multiply
    681.50x = 941.69 × 504.21
  4. Step 4: Simplify right side
    681.50x = 474,809.51
  5. Step 5: Solve for x
    x = 474,809.51/681.50
  6. Step 6: Final answer
    x = 696.71

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Double scale
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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.