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Finding the Fourth Proportional to 1,120.43, 1,546.24 and 623.19

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Solution

The fourth proportional to 1,120.43, 1,546.24 and 623.19 is: 860.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.43 : 1,546.24 = 623.19 : x
  2. Step 2: Convert to fraction form
    1,120.43/1,546.24 = 623.19/x
  3. Step 3: Cross multiply
    1,120.43x = 1,546.24 × 623.19
  4. Step 4: Simplify right side
    1,120.43x = 963,606.71
  5. Step 5: Solve for x
    x = 963,606.71/1,120.43
  6. Step 6: Final answer
    x = 860.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.