Home / 1,521.48-2,280.77-480.77

Finding the Fourth Proportional to 1,521.48, 2,280.77 and 480.77

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Solution

The fourth proportional to 1,521.48, 2,280.77 and 480.77 is: 720.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.48 : 2,280.77 = 480.77 : x
  2. Step 2: Convert to fraction form
    1,521.48/2,280.77 = 480.77/x
  3. Step 3: Cross multiply
    1,521.48x = 2,280.77 × 480.77
  4. Step 4: Simplify right side
    1,521.48x = 1,096,511.99
  5. Step 5: Solve for x
    x = 1,096,511.99/1,521.48
  6. Step 6: Final answer
    x = 720.69

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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.