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Finding the Fourth Proportional to 684.05, 1,026.42 and 294.31

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Solution

The fourth proportional to 684.05, 1,026.42 and 294.31 is: 441.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.05 : 1,026.42 = 294.31 : x
  2. Step 2: Convert to fraction form
    684.05/1,026.42 = 294.31/x
  3. Step 3: Cross multiply
    684.05x = 1,026.42 × 294.31
  4. Step 4: Simplify right side
    684.05x = 302,085.67
  5. Step 5: Solve for x
    x = 302,085.67/684.05
  6. Step 6: Final answer
    x = 441.61

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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.