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Finding the Fourth Proportional to 1,228.86, 1,842.71 and 448.32

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Solution

The fourth proportional to 1,228.86, 1,842.71 and 448.32 is: 672.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.86 : 1,842.71 = 448.32 : x
  2. Step 2: Convert to fraction form
    1,228.86/1,842.71 = 448.32/x
  3. Step 3: Cross multiply
    1,228.86x = 1,842.71 × 448.32
  4. Step 4: Simplify right side
    1,228.86x = 826,123.75
  5. Step 5: Solve for x
    x = 826,123.75/1,228.86
  6. Step 6: Final answer
    x = 672.27

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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.