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Finding the Fourth Proportional to 902.37, 1,354.10 and 828.93

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Solution

The fourth proportional to 902.37, 1,354.10 and 828.93 is: 1,243.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.37 : 1,354.10 = 828.93 : x
  2. Step 2: Convert to fraction form
    902.37/1,354.10 = 828.93/x
  3. Step 3: Cross multiply
    902.37x = 1,354.10 × 828.93
  4. Step 4: Simplify right side
    902.37x = 1,122,449.97
  5. Step 5: Solve for x
    x = 1,122,449.97/902.37
  6. Step 6: Final answer
    x = 1,243.89

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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.