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Finding the Fourth Proportional to 689.04, 950.04 and 479.39

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Solution

The fourth proportional to 689.04, 950.04 and 479.39 is: 660.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    689.04 : 950.04 = 479.39 : x
  2. Step 2: Convert to fraction form
    689.04/950.04 = 479.39/x
  3. Step 3: Cross multiply
    689.04x = 950.04 × 479.39
  4. Step 4: Simplify right side
    689.04x = 455,439.68
  5. Step 5: Solve for x
    x = 455,439.68/689.04
  6. Step 6: Final answer
    x = 660.98

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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.