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Finding the Fourth Proportional to 495.32, 683.37 and 308.66

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Solution

The fourth proportional to 495.32, 683.37 and 308.66 is: 425.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.32 : 683.37 = 308.66 : x
  2. Step 2: Convert to fraction form
    495.32/683.37 = 308.66/x
  3. Step 3: Cross multiply
    495.32x = 683.37 × 308.66
  4. Step 4: Simplify right side
    495.32x = 210,925.57
  5. Step 5: Solve for x
    x = 210,925.57/495.32
  6. Step 6: Final answer
    x = 425.83

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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.