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Finding the Fourth Proportional to 688.10, 949.22 and 467.12

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Solution

The fourth proportional to 688.10, 949.22 and 467.12 is: 644.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.10 : 949.22 = 467.12 : x
  2. Step 2: Convert to fraction form
    688.10/949.22 = 467.12/x
  3. Step 3: Cross multiply
    688.10x = 949.22 × 467.12
  4. Step 4: Simplify right side
    688.10x = 443,392.56
  5. Step 5: Solve for x
    x = 443,392.56/688.10
  6. Step 6: Final answer
    x = 644.38

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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.