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Finding the Fourth Proportional to 666.06, 992.06 and 631.37

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Solution

The fourth proportional to 666.06, 992.06 and 631.37 is: 940.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    666.06 : 992.06 = 631.37 : x
  2. Step 2: Convert to fraction form
    666.06/992.06 = 631.37/x
  3. Step 3: Cross multiply
    666.06x = 992.06 × 631.37
  4. Step 4: Simplify right side
    666.06x = 626,356.92
  5. Step 5: Solve for x
    x = 626,356.92/666.06
  6. Step 6: Final answer
    x = 940.39

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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.