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Finding the Fourth Proportional to 684.06, 1,026.36 and 395.34

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Solution

The fourth proportional to 684.06, 1,026.36 and 395.34 is: 593.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.06 : 1,026.36 = 395.34 : x
  2. Step 2: Convert to fraction form
    684.06/1,026.36 = 395.34/x
  3. Step 3: Cross multiply
    684.06x = 1,026.36 × 395.34
  4. Step 4: Simplify right side
    684.06x = 405,761.16
  5. Step 5: Solve for x
    x = 405,761.16/684.06
  6. Step 6: Final answer
    x = 593.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.