Home / 1,520.19-2,280.57-480.46

Finding the Fourth Proportional to 1,520.19, 2,280.57 and 480.46

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Solution

The fourth proportional to 1,520.19, 2,280.57 and 480.46 is: 720.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.19 : 2,280.57 = 480.46 : x
  2. Step 2: Convert to fraction form
    1,520.19/2,280.57 = 480.46/x
  3. Step 3: Cross multiply
    1,520.19x = 2,280.57 × 480.46
  4. Step 4: Simplify right side
    1,520.19x = 1,095,716.74
  5. Step 5: Solve for x
    x = 1,095,716.74/1,520.19
  6. Step 6: Final answer
    x = 720.77

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1.5x scale

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.