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Finding the Fourth Proportional to 914.28, 1,370.46 and 336.84

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Solution

The fourth proportional to 914.28, 1,370.46 and 336.84 is: 504.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.28 : 1,370.46 = 336.84 : x
  2. Step 2: Convert to fraction form
    914.28/1,370.46 = 336.84/x
  3. Step 3: Cross multiply
    914.28x = 1,370.46 × 336.84
  4. Step 4: Simplify right side
    914.28x = 461,625.75
  5. Step 5: Solve for x
    x = 461,625.75/914.28
  6. Step 6: Final answer
    x = 504.91

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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.