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Finding the Fourth Proportional to 667.58, 995.49 and 614.39

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Solution

The fourth proportional to 667.58, 995.49 and 614.39 is: 916.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.58 : 995.49 = 614.39 : x
  2. Step 2: Convert to fraction form
    667.58/995.49 = 614.39/x
  3. Step 3: Cross multiply
    667.58x = 995.49 × 614.39
  4. Step 4: Simplify right side
    667.58x = 611,614.12
  5. Step 5: Solve for x
    x = 611,614.12/667.58
  6. Step 6: Final answer
    x = 916.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.