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Finding the Fourth Proportional to 494.26, 682.42 and 345.19

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Solution

The fourth proportional to 494.26, 682.42 and 345.19 is: 476.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.26 : 682.42 = 345.19 : x
  2. Step 2: Convert to fraction form
    494.26/682.42 = 345.19/x
  3. Step 3: Cross multiply
    494.26x = 682.42 × 345.19
  4. Step 4: Simplify right side
    494.26x = 235,564.56
  5. Step 5: Solve for x
    x = 235,564.56/494.26
  6. Step 6: Final answer
    x = 476.60

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.