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Finding the Fourth Proportional to 328.96, 453.72 and 230.50

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Solution

The fourth proportional to 328.96, 453.72 and 230.50 is: 317.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.96 : 453.72 = 230.50 : x
  2. Step 2: Convert to fraction form
    328.96/453.72 = 230.50/x
  3. Step 3: Cross multiply
    328.96x = 453.72 × 230.50
  4. Step 4: Simplify right side
    328.96x = 104,582.46
  5. Step 5: Solve for x
    x = 104,582.46/328.96
  6. Step 6: Final answer
    x = 317.92

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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.