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Finding the Fourth Proportional to 328.23, 489.74 and 325.04

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Solution

The fourth proportional to 328.23, 489.74 and 325.04 is: 484.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.23 : 489.74 = 325.04 : x
  2. Step 2: Convert to fraction form
    328.23/489.74 = 325.04/x
  3. Step 3: Cross multiply
    328.23x = 489.74 × 325.04
  4. Step 4: Simplify right side
    328.23x = 159,185.09
  5. Step 5: Solve for x
    x = 159,185.09/328.23
  6. Step 6: Final answer
    x = 484.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.