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Finding the Fourth Proportional to 1,444.80, 1,994.13 and 913.34

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Solution

The fourth proportional to 1,444.80, 1,994.13 and 913.34 is: 1,260.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,444.80 : 1,994.13 = 913.34 : x
  2. Step 2: Convert to fraction form
    1,444.80/1,994.13 = 913.34/x
  3. Step 3: Cross multiply
    1,444.80x = 1,994.13 × 913.34
  4. Step 4: Simplify right side
    1,444.80x = 1,821,323.68
  5. Step 5: Solve for x
    x = 1,821,323.68/1,444.80
  6. Step 6: Final answer
    x = 1,260.61

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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.