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Finding the Fourth Proportional to 456.18, 683.52 and 293.76

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Solution

The fourth proportional to 456.18, 683.52 and 293.76 is: 440.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.18 : 683.52 = 293.76 : x
  2. Step 2: Convert to fraction form
    456.18/683.52 = 293.76/x
  3. Step 3: Cross multiply
    456.18x = 683.52 × 293.76
  4. Step 4: Simplify right side
    456.18x = 200,790.84
  5. Step 5: Solve for x
    x = 200,790.84/456.18
  6. Step 6: Final answer
    x = 440.16

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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.