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Finding the Fourth Proportional to 328.65, 453.42 and 245.82

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Solution

The fourth proportional to 328.65, 453.42 and 245.82 is: 339.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.65 : 453.42 = 245.82 : x
  2. Step 2: Convert to fraction form
    328.65/453.42 = 245.82/x
  3. Step 3: Cross multiply
    328.65x = 453.42 × 245.82
  4. Step 4: Simplify right side
    328.65x = 111,459.70
  5. Step 5: Solve for x
    x = 111,459.70/328.65
  6. Step 6: Final answer
    x = 339.14

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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.