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Finding the Fourth Proportional to 1,362.70, 2,044.36 and 388.88

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Solution

The fourth proportional to 1,362.70, 2,044.36 and 388.88 is: 583.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.70 : 2,044.36 = 388.88 : x
  2. Step 2: Convert to fraction form
    1,362.70/2,044.36 = 388.88/x
  3. Step 3: Cross multiply
    1,362.70x = 2,044.36 × 388.88
  4. Step 4: Simplify right side
    1,362.70x = 795,008.65
  5. Step 5: Solve for x
    x = 795,008.65/1,362.70
  6. Step 6: Final answer
    x = 583.41

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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.