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Finding the Fourth Proportional to 682.86, 1,024.20 and 249.69

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Solution

The fourth proportional to 682.86, 1,024.20 and 249.69 is: 374.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.86 : 1,024.20 = 249.69 : x
  2. Step 2: Convert to fraction form
    682.86/1,024.20 = 249.69/x
  3. Step 3: Cross multiply
    682.86x = 1,024.20 × 249.69
  4. Step 4: Simplify right side
    682.86x = 255,732.50
  5. Step 5: Solve for x
    x = 255,732.50/682.86
  6. Step 6: Final answer
    x = 374.50

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1.5x scale

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.