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Finding the Fourth Proportional to 456.33, 684.54 and 310.62

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Solution

The fourth proportional to 456.33, 684.54 and 310.62 is: 465.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.33 : 684.54 = 310.62 : x
  2. Step 2: Convert to fraction form
    456.33/684.54 = 310.62/x
  3. Step 3: Cross multiply
    456.33x = 684.54 × 310.62
  4. Step 4: Simplify right side
    456.33x = 212,631.81
  5. Step 5: Solve for x
    x = 212,631.81/456.33
  6. Step 6: Final answer
    x = 465.96

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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.