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Finding the Fourth Proportional to 666.63, 998.33 and 460.62

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Solution

The fourth proportional to 666.63, 998.33 and 460.62 is: 689.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.63 : 998.33 = 460.62 : x
  2. Step 2: Convert to fraction form
    666.63/998.33 = 460.62/x
  3. Step 3: Cross multiply
    666.63x = 998.33 × 460.62
  4. Step 4: Simplify right side
    666.63x = 459,848.46
  5. Step 5: Solve for x
    x = 459,848.46/666.63
  6. Step 6: Final answer
    x = 689.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.