Home / 1,120.67-1,546.51-623.30

Finding the Fourth Proportional to 1,120.67, 1,546.51 and 623.30

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Solution

The fourth proportional to 1,120.67, 1,546.51 and 623.30 is: 860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.67 : 1,546.51 = 623.30 : x
  2. Step 2: Convert to fraction form
    1,120.67/1,546.51 = 623.30/x
  3. Step 3: Cross multiply
    1,120.67x = 1,546.51 × 623.30
  4. Step 4: Simplify right side
    1,120.67x = 963,928.83
  5. Step 5: Solve for x
    x = 963,928.83/1,120.67
  6. Step 6: Final answer
    x = 860.14

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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.