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Finding the Fourth Proportional to 1,115.89, 1,673.88 and 335.91

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Solution

The fourth proportional to 1,115.89, 1,673.88 and 335.91 is: 503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.89 : 1,673.88 = 335.91 : x
  2. Step 2: Convert to fraction form
    1,115.89/1,673.88 = 335.91/x
  3. Step 3: Cross multiply
    1,115.89x = 1,673.88 × 335.91
  4. Step 4: Simplify right side
    1,115.89x = 562,273.03
  5. Step 5: Solve for x
    x = 562,273.03/1,115.89
  6. Step 6: Final answer
    x = 503.88

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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.