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Finding the Fourth Proportional to 657.63, 985.49 and 332.55

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Solution

The fourth proportional to 657.63, 985.49 and 332.55 is: 498.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.63 : 985.49 = 332.55 : x
  2. Step 2: Convert to fraction form
    657.63/985.49 = 332.55/x
  3. Step 3: Cross multiply
    657.63x = 985.49 × 332.55
  4. Step 4: Simplify right side
    657.63x = 327,724.70
  5. Step 5: Solve for x
    x = 327,724.70/657.63
  6. Step 6: Final answer
    x = 498.34

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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.