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Finding the Fourth Proportional to 1,416.48, 2,124.18 and 550.68

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Solution

The fourth proportional to 1,416.48, 2,124.18 and 550.68 is: 825.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.48 : 2,124.18 = 550.68 : x
  2. Step 2: Convert to fraction form
    1,416.48/2,124.18 = 550.68/x
  3. Step 3: Cross multiply
    1,416.48x = 2,124.18 × 550.68
  4. Step 4: Simplify right side
    1,416.48x = 1,169,743.44
  5. Step 5: Solve for x
    x = 1,169,743.44/1,416.48
  6. Step 6: Final answer
    x = 825.81

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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.