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Finding the Fourth Proportional to 325.91, 488.71 and 188.99

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Solution

The fourth proportional to 325.91, 488.71 and 188.99 is: 283.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.91 : 488.71 = 188.99 : x
  2. Step 2: Convert to fraction form
    325.91/488.71 = 188.99/x
  3. Step 3: Cross multiply
    325.91x = 488.71 × 188.99
  4. Step 4: Simplify right side
    325.91x = 92,361.58
  5. Step 5: Solve for x
    x = 92,361.58/325.91
  6. Step 6: Final answer
    x = 283.40

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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.