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Finding the Fourth Proportional to 1,488.25, 2,232.39 and 448.30

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Solution

The fourth proportional to 1,488.25, 2,232.39 and 448.30 is: 672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.25 : 2,232.39 = 448.30 : x
  2. Step 2: Convert to fraction form
    1,488.25/2,232.39 = 448.30/x
  3. Step 3: Cross multiply
    1,488.25x = 2,232.39 × 448.30
  4. Step 4: Simplify right side
    1,488.25x = 1,000,769.28
  5. Step 5: Solve for x
    x = 1,000,769.28/1,488.25
  6. Step 6: Final answer
    x = 672.45

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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.