Home / 1,520-2,280.30-480.16

Finding the Fourth Proportional to 1,520, 2,280.30 and 480.16

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Solution

The fourth proportional to 1,520, 2,280.30 and 480.16 is: 720.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520 : 2,280.30 = 480.16 : x
  2. Step 2: Convert to fraction form
    1,520/2,280.30 = 480.16/x
  3. Step 3: Cross multiply
    1,520x = 2,280.30 × 480.16
  4. Step 4: Simplify right side
    1,520x = 1,094,897.45
  5. Step 5: Solve for x
    x = 1,094,897.45/1,520
  6. Step 6: Final answer
    x = 720.33

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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.