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Finding the Fourth Proportional to 1,544.96, 2,315.22 and 667.22

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Solution

The fourth proportional to 1,544.96, 2,315.22 and 667.22 is: 999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.96 : 2,315.22 = 667.22 : x
  2. Step 2: Convert to fraction form
    1,544.96/2,315.22 = 667.22/x
  3. Step 3: Cross multiply
    1,544.96x = 2,315.22 × 667.22
  4. Step 4: Simplify right side
    1,544.96x = 1,544,749.51
  5. Step 5: Solve for x
    x = 1,544,749.51/1,544.96
  6. Step 6: Final answer
    x = 999.87

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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.