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Finding the Fourth Proportional to 505.97, 696.18 and 493.82

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Solution

The fourth proportional to 505.97, 696.18 and 493.82 is: 679.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.97 : 696.18 = 493.82 : x
  2. Step 2: Convert to fraction form
    505.97/696.18 = 493.82/x
  3. Step 3: Cross multiply
    505.97x = 696.18 × 493.82
  4. Step 4: Simplify right side
    505.97x = 343,784.13
  5. Step 5: Solve for x
    x = 343,784.13/505.97
  6. Step 6: Final answer
    x = 679.46

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Double scale
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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.