Home / 719.03-1,078.55-286.19

Finding the Fourth Proportional to 719.03, 1,078.55 and 286.19

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Solution

The fourth proportional to 719.03, 1,078.55 and 286.19 is: 429.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.03 : 1,078.55 = 286.19 : x
  2. Step 2: Convert to fraction form
    719.03/1,078.55 = 286.19/x
  3. Step 3: Cross multiply
    719.03x = 1,078.55 × 286.19
  4. Step 4: Simplify right side
    719.03x = 308,673.64
  5. Step 5: Solve for x
    x = 308,673.64/719.03
  6. Step 6: Final answer
    x = 429.29

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Similar ratio
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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.