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Finding the Fourth Proportional to 328.38, 492.53 and 310.31

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Solution

The fourth proportional to 328.38, 492.53 and 310.31 is: 465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.38 : 492.53 = 310.31 : x
  2. Step 2: Convert to fraction form
    328.38/492.53 = 310.31/x
  3. Step 3: Cross multiply
    328.38x = 492.53 × 310.31
  4. Step 4: Simplify right side
    328.38x = 152,832.97
  5. Step 5: Solve for x
    x = 152,832.97/328.38
  6. Step 6: Final answer
    x = 465.41

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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.