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Finding the Fourth Proportional to 1,051.21, 1,450.67 and 579.11

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Solution

The fourth proportional to 1,051.21, 1,450.67 and 579.11 is: 799.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.21 : 1,450.67 = 579.11 : x
  2. Step 2: Convert to fraction form
    1,051.21/1,450.67 = 579.11/x
  3. Step 3: Cross multiply
    1,051.21x = 1,450.67 × 579.11
  4. Step 4: Simplify right side
    1,051.21x = 840,097.50
  5. Step 5: Solve for x
    x = 840,097.50/1,051.21
  6. Step 6: Final answer
    x = 799.18

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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.