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Finding the Fourth Proportional to 657.60, 985.05 and 332.25

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Solution

The fourth proportional to 657.60, 985.05 and 332.25 is: 497.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.60 : 985.05 = 332.25 : x
  2. Step 2: Convert to fraction form
    657.60/985.05 = 332.25/x
  3. Step 3: Cross multiply
    657.60x = 985.05 × 332.25
  4. Step 4: Simplify right side
    657.60x = 327,282.86
  5. Step 5: Solve for x
    x = 327,282.86/657.60
  6. Step 6: Final answer
    x = 497.69

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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.