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Finding the Fourth Proportional to 329.04, 493.55 and 155.65

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Solution

The fourth proportional to 329.04, 493.55 and 155.65 is: 233.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.04 : 493.55 = 155.65 : x
  2. Step 2: Convert to fraction form
    329.04/493.55 = 155.65/x
  3. Step 3: Cross multiply
    329.04x = 493.55 × 155.65
  4. Step 4: Simplify right side
    329.04x = 76,821.06
  5. Step 5: Solve for x
    x = 76,821.06/329.04
  6. Step 6: Final answer
    x = 233.47

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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.