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Finding the Fourth Proportional to 688.17, 950.06 and 439.69

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Solution

The fourth proportional to 688.17, 950.06 and 439.69 is: 607.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.17 : 950.06 = 439.69 : x
  2. Step 2: Convert to fraction form
    688.17/950.06 = 439.69/x
  3. Step 3: Cross multiply
    688.17x = 950.06 × 439.69
  4. Step 4: Simplify right side
    688.17x = 417,731.88
  5. Step 5: Solve for x
    x = 417,731.88/688.17
  6. Step 6: Final answer
    x = 607.02

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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.