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Finding the Fourth Proportional to 1,544.23, 2,315.79 and 448.30

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Solution

The fourth proportional to 1,544.23, 2,315.79 and 448.30 is: 672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.23 : 2,315.79 = 448.30 : x
  2. Step 2: Convert to fraction form
    1,544.23/2,315.79 = 448.30/x
  3. Step 3: Cross multiply
    1,544.23x = 2,315.79 × 448.30
  4. Step 4: Simplify right side
    1,544.23x = 1,038,168.66
  5. Step 5: Solve for x
    x = 1,038,168.66/1,544.23
  6. Step 6: Final answer
    x = 672.29

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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.