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Finding the Fourth Proportional to 1,347.85, 2,021.50 and 481.96

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Solution

The fourth proportional to 1,347.85, 2,021.50 and 481.96 is: 722.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.85 : 2,021.50 = 481.96 : x
  2. Step 2: Convert to fraction form
    1,347.85/2,021.50 = 481.96/x
  3. Step 3: Cross multiply
    1,347.85x = 2,021.50 × 481.96
  4. Step 4: Simplify right side
    1,347.85x = 974,282.14
  5. Step 5: Solve for x
    x = 974,282.14/1,347.85
  6. Step 6: Final answer
    x = 722.84

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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.