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Finding the Fourth Proportional to 680.43, 937.64 and 483.39

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Solution

The fourth proportional to 680.43, 937.64 and 483.39 is: 666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    680.43 : 937.64 = 483.39 : x
  2. Step 2: Convert to fraction form
    680.43/937.64 = 483.39/x
  3. Step 3: Cross multiply
    680.43x = 937.64 × 483.39
  4. Step 4: Simplify right side
    680.43x = 453,241.11
  5. Step 5: Solve for x
    x = 453,241.11/680.43
  6. Step 6: Final answer
    x = 666.11

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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.