Home / 1,120.04-1,680.15-298.31

Finding the Fourth Proportional to 1,120.04, 1,680.15 and 298.31

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Solution

The fourth proportional to 1,120.04, 1,680.15 and 298.31 is: 447.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.04 : 1,680.15 = 298.31 : x
  2. Step 2: Convert to fraction form
    1,120.04/1,680.15 = 298.31/x
  3. Step 3: Cross multiply
    1,120.04x = 1,680.15 × 298.31
  4. Step 4: Simplify right side
    1,120.04x = 501,210.87
  5. Step 5: Solve for x
    x = 501,210.87/1,120.04
  6. Step 6: Final answer
    x = 447.49

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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.