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Finding the Fourth Proportional to 682.65, 941.49 and 486.27

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Solution

The fourth proportional to 682.65, 941.49 and 486.27 is: 670.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.65 : 941.49 = 486.27 : x
  2. Step 2: Convert to fraction form
    682.65/941.49 = 486.27/x
  3. Step 3: Cross multiply
    682.65x = 941.49 × 486.27
  4. Step 4: Simplify right side
    682.65x = 457,818.34
  5. Step 5: Solve for x
    x = 457,818.34/682.65
  6. Step 6: Final answer
    x = 670.65

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1.5x scale

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.