Home / 1,051.21-1,450.68-579.15

Finding the Fourth Proportional to 1,051.21, 1,450.68 and 579.15

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Solution

The fourth proportional to 1,051.21, 1,450.68 and 579.15 is: 799.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.21 : 1,450.68 = 579.15 : x
  2. Step 2: Convert to fraction form
    1,051.21/1,450.68 = 579.15/x
  3. Step 3: Cross multiply
    1,051.21x = 1,450.68 × 579.15
  4. Step 4: Simplify right side
    1,051.21x = 840,159.15
  5. Step 5: Solve for x
    x = 840,159.15/1,051.21
  6. Step 6: Final answer
    x = 799.23

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Double scale
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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.