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Finding the Fourth Proportional to 328.75, 453.56 and 188.82

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Solution

The fourth proportional to 328.75, 453.56 and 188.82 is: 260.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.75 : 453.56 = 188.82 : x
  2. Step 2: Convert to fraction form
    328.75/453.56 = 188.82/x
  3. Step 3: Cross multiply
    328.75x = 453.56 × 188.82
  4. Step 4: Simplify right side
    328.75x = 85,641.20
  5. Step 5: Solve for x
    x = 85,641.20/328.75
  6. Step 6: Final answer
    x = 260.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.