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Finding the Fourth Proportional to 660.14, 995.22 and 624.86

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Solution

The fourth proportional to 660.14, 995.22 and 624.86 is: 942.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.14 : 995.22 = 624.86 : x
  2. Step 2: Convert to fraction form
    660.14/995.22 = 624.86/x
  3. Step 3: Cross multiply
    660.14x = 995.22 × 624.86
  4. Step 4: Simplify right side
    660.14x = 621,873.17
  5. Step 5: Solve for x
    x = 621,873.17/660.14
  6. Step 6: Final answer
    x = 942.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.