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Finding the Fourth Proportional to 325.42, 487.42 and 188.33

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Solution

The fourth proportional to 325.42, 487.42 and 188.33 is: 282.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.42 : 487.42 = 188.33 : x
  2. Step 2: Convert to fraction form
    325.42/487.42 = 188.33/x
  3. Step 3: Cross multiply
    325.42x = 487.42 × 188.33
  4. Step 4: Simplify right side
    325.42x = 91,792.90
  5. Step 5: Solve for x
    x = 91,792.90/325.42
  6. Step 6: Final answer
    x = 282.08

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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.