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Finding the Fourth Proportional to 329.04, 492.60 and 316.56

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Solution

The fourth proportional to 329.04, 492.60 and 316.56 is: 473.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.04 : 492.60 = 316.56 : x
  2. Step 2: Convert to fraction form
    329.04/492.60 = 316.56/x
  3. Step 3: Cross multiply
    329.04x = 492.60 × 316.56
  4. Step 4: Simplify right side
    329.04x = 155,937.46
  5. Step 5: Solve for x
    x = 155,937.46/329.04
  6. Step 6: Final answer
    x = 473.92

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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.