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Finding the Fourth Proportional to 682.80, 942.17 and 434.01

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Solution

The fourth proportional to 682.80, 942.17 and 434.01 is: 598.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.80 : 942.17 = 434.01 : x
  2. Step 2: Convert to fraction form
    682.80/942.17 = 434.01/x
  3. Step 3: Cross multiply
    682.80x = 942.17 × 434.01
  4. Step 4: Simplify right side
    682.80x = 408,911.20
  5. Step 5: Solve for x
    x = 408,911.20/682.80
  6. Step 6: Final answer
    x = 598.87

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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.