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Finding the Fourth Proportional to 1,444.36, 1,993.04 and 814.80

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Solution

The fourth proportional to 1,444.36, 1,993.04 and 814.80 is: 1,124.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,444.36 : 1,993.04 = 814.80 : x
  2. Step 2: Convert to fraction form
    1,444.36/1,993.04 = 814.80/x
  3. Step 3: Cross multiply
    1,444.36x = 1,993.04 × 814.80
  4. Step 4: Simplify right side
    1,444.36x = 1,623,928.99
  5. Step 5: Solve for x
    x = 1,623,928.99/1,444.36
  6. Step 6: Final answer
    x = 1,124.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.