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Finding the Fourth Proportional to 1,246.33, 1,719.73 and 722.26

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Solution

The fourth proportional to 1,246.33, 1,719.73 and 722.26 is: 996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.33 : 1,719.73 = 722.26 : x
  2. Step 2: Convert to fraction form
    1,246.33/1,719.73 = 722.26/x
  3. Step 3: Cross multiply
    1,246.33x = 1,719.73 × 722.26
  4. Step 4: Simplify right side
    1,246.33x = 1,242,081.79
  5. Step 5: Solve for x
    x = 1,242,081.79/1,246.33
  6. Step 6: Final answer
    x = 996.60

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1.5x scale

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.