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Finding the Fourth Proportional to 1,441.79, 2,161.47 and 575.63

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Solution

The fourth proportional to 1,441.79, 2,161.47 and 575.63 is: 862.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.79 : 2,161.47 = 575.63 : x
  2. Step 2: Convert to fraction form
    1,441.79/2,161.47 = 575.63/x
  3. Step 3: Cross multiply
    1,441.79x = 2,161.47 × 575.63
  4. Step 4: Simplify right side
    1,441.79x = 1,244,206.98
  5. Step 5: Solve for x
    x = 1,244,206.98/1,441.79
  6. Step 6: Final answer
    x = 862.96

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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.