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Finding the Fourth Proportional to 325.47, 488.61 and 188.76

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Solution

The fourth proportional to 325.47, 488.61 and 188.76 is: 283.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.47 : 488.61 = 188.76 : x
  2. Step 2: Convert to fraction form
    325.47/488.61 = 188.76/x
  3. Step 3: Cross multiply
    325.47x = 488.61 × 188.76
  4. Step 4: Simplify right side
    325.47x = 92,230.02
  5. Step 5: Solve for x
    x = 92,230.02/325.47
  6. Step 6: Final answer
    x = 283.37

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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.