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Finding the Fourth Proportional to 1,120.37, 1,546.16 and 622.99

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Solution

The fourth proportional to 1,120.37, 1,546.16 and 622.99 is: 859.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.37 : 1,546.16 = 622.99 : x
  2. Step 2: Convert to fraction form
    1,120.37/1,546.16 = 622.99/x
  3. Step 3: Cross multiply
    1,120.37x = 1,546.16 × 622.99
  4. Step 4: Simplify right side
    1,120.37x = 963,235.24
  5. Step 5: Solve for x
    x = 963,235.24/1,120.37
  6. Step 6: Final answer
    x = 859.75

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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.