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Finding the Fourth Proportional to 700.71, 1,044.62 and 667.91

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Solution

The fourth proportional to 700.71, 1,044.62 and 667.91 is: 995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.71 : 1,044.62 = 667.91 : x
  2. Step 2: Convert to fraction form
    700.71/1,044.62 = 667.91/x
  3. Step 3: Cross multiply
    700.71x = 1,044.62 × 667.91
  4. Step 4: Simplify right side
    700.71x = 697,712.14
  5. Step 5: Solve for x
    x = 697,712.14/700.71
  6. Step 6: Final answer
    x = 995.72

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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.