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Finding the Fourth Proportional to 1,260.20, 1,889.03 and 480.01

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Solution

The fourth proportional to 1,260.20, 1,889.03 and 480.01 is: 719.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.20 : 1,889.03 = 480.01 : x
  2. Step 2: Convert to fraction form
    1,260.20/1,889.03 = 480.01/x
  3. Step 3: Cross multiply
    1,260.20x = 1,889.03 × 480.01
  4. Step 4: Simplify right side
    1,260.20x = 906,743.85
  5. Step 5: Solve for x
    x = 906,743.85/1,260.20
  6. Step 6: Final answer
    x = 719.52

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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.