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Finding the Fourth Proportional to 682.63, 942.05 and 372.13

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Solution

The fourth proportional to 682.63, 942.05 and 372.13 is: 513.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.63 : 942.05 = 372.13 : x
  2. Step 2: Convert to fraction form
    682.63/942.05 = 372.13/x
  3. Step 3: Cross multiply
    682.63x = 942.05 × 372.13
  4. Step 4: Simplify right side
    682.63x = 350,565.07
  5. Step 5: Solve for x
    x = 350,565.07/682.63
  6. Step 6: Final answer
    x = 513.55

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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.