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Finding the Fourth Proportional to 917.73, 1,376.33 and 301.29

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Solution

The fourth proportional to 917.73, 1,376.33 and 301.29 is: 451.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    917.73 : 1,376.33 = 301.29 : x
  2. Step 2: Convert to fraction form
    917.73/1,376.33 = 301.29/x
  3. Step 3: Cross multiply
    917.73x = 1,376.33 × 301.29
  4. Step 4: Simplify right side
    917.73x = 414,667.80
  5. Step 5: Solve for x
    x = 414,667.80/917.73
  6. Step 6: Final answer
    x = 451.84

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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.