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Finding the Fourth Proportional to 487.55, 731.26 and 195.09

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Solution

The fourth proportional to 487.55, 731.26 and 195.09 is: 292.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    487.55 : 731.26 = 195.09 : x
  2. Step 2: Convert to fraction form
    487.55/731.26 = 195.09/x
  3. Step 3: Cross multiply
    487.55x = 731.26 × 195.09
  4. Step 4: Simplify right side
    487.55x = 142,661.51
  5. Step 5: Solve for x
    x = 142,661.51/487.55
  6. Step 6: Final answer
    x = 292.61

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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.