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Finding the Fourth Proportional to 684.75, 944.97 and 632.43

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Solution

The fourth proportional to 684.75, 944.97 and 632.43 is: 872.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.75 : 944.97 = 632.43 : x
  2. Step 2: Convert to fraction form
    684.75/944.97 = 632.43/x
  3. Step 3: Cross multiply
    684.75x = 944.97 × 632.43
  4. Step 4: Simplify right side
    684.75x = 597,627.66
  5. Step 5: Solve for x
    x = 597,627.66/684.75
  6. Step 6: Final answer
    x = 872.76

Related Problems

Find fourth proportional to 342.38, 472.48 and 316.22
Half scale
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Double scale
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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.