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Finding the Fourth Proportional to 1,406.43, 2,109.24 and 584.55

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Solution

The fourth proportional to 1,406.43, 2,109.24 and 584.55 is: 876.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,406.43 : 2,109.24 = 584.55 : x
  2. Step 2: Convert to fraction form
    1,406.43/2,109.24 = 584.55/x
  3. Step 3: Cross multiply
    1,406.43x = 2,109.24 × 584.55
  4. Step 4: Simplify right side
    1,406.43x = 1,232,956.24
  5. Step 5: Solve for x
    x = 1,232,956.24/1,406.43
  6. Step 6: Final answer
    x = 876.66

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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.