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Finding the Fourth Proportional to 328.35, 453.11 and 216.35

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Solution

The fourth proportional to 328.35, 453.11 and 216.35 is: 298.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.35 : 453.11 = 216.35 : x
  2. Step 2: Convert to fraction form
    328.35/453.11 = 216.35/x
  3. Step 3: Cross multiply
    328.35x = 453.11 × 216.35
  4. Step 4: Simplify right side
    328.35x = 98,027.00
  5. Step 5: Solve for x
    x = 98,027.00/328.35
  6. Step 6: Final answer
    x = 298.54

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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.