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Finding the Fourth Proportional to 912.99, 1,370.09 and 335.86

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Solution

The fourth proportional to 912.99, 1,370.09 and 335.86 is: 504.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    912.99 : 1,370.09 = 335.86 : x
  2. Step 2: Convert to fraction form
    912.99/1,370.09 = 335.86/x
  3. Step 3: Cross multiply
    912.99x = 1,370.09 × 335.86
  4. Step 4: Simplify right side
    912.99x = 460,160.58
  5. Step 5: Solve for x
    x = 460,160.58/912.99
  6. Step 6: Final answer
    x = 504.02

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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.