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Finding the Fourth Proportional to 495.27, 683.10 and 308.55

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Solution

The fourth proportional to 495.27, 683.10 and 308.55 is: 425.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.27 : 683.10 = 308.55 : x
  2. Step 2: Convert to fraction form
    495.27/683.10 = 308.55/x
  3. Step 3: Cross multiply
    495.27x = 683.10 × 308.55
  4. Step 4: Simplify right side
    495.27x = 210,770.51
  5. Step 5: Solve for x
    x = 210,770.51/495.27
  6. Step 6: Final answer
    x = 425.57

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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.