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Finding the Fourth Proportional to 1,096.48, 1,512.60 and 1,021.30

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Solution

The fourth proportional to 1,096.48, 1,512.60 and 1,021.30 is: 1,408.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,096.48 : 1,512.60 = 1,021.30 : x
  2. Step 2: Convert to fraction form
    1,096.48/1,512.60 = 1,021.30/x
  3. Step 3: Cross multiply
    1,096.48x = 1,512.60 × 1,021.30
  4. Step 4: Simplify right side
    1,096.48x = 1,544,818.38
  5. Step 5: Solve for x
    x = 1,544,818.38/1,096.48
  6. Step 6: Final answer
    x = 1,408.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.