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Finding the Fourth Proportional to 680.46, 936.66 and 483.66

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Solution

The fourth proportional to 680.46, 936.66 and 483.66 is: 665.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    680.46 : 936.66 = 483.66 : x
  2. Step 2: Convert to fraction form
    680.46/936.66 = 483.66/x
  3. Step 3: Cross multiply
    680.46x = 936.66 × 483.66
  4. Step 4: Simplify right side
    680.46x = 453,024.98
  5. Step 5: Solve for x
    x = 453,024.98/680.46
  6. Step 6: Final answer
    x = 665.76

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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.