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Finding the Fourth Proportional to 1,347.64, 2,020.26 and 481.84

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Solution

The fourth proportional to 1,347.64, 2,020.26 and 481.84 is: 722.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.64 : 2,020.26 = 481.84 : x
  2. Step 2: Convert to fraction form
    1,347.64/2,020.26 = 481.84/x
  3. Step 3: Cross multiply
    1,347.64x = 2,020.26 × 481.84
  4. Step 4: Simplify right side
    1,347.64x = 973,442.08
  5. Step 5: Solve for x
    x = 973,442.08/1,347.64
  6. Step 6: Final answer
    x = 722.33

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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.