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Finding the Fourth Proportional to 1,362.80, 2,044.23 and 388.93

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Solution

The fourth proportional to 1,362.80, 2,044.23 and 388.93 is: 583.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.80 : 2,044.23 = 388.93 : x
  2. Step 2: Convert to fraction form
    1,362.80/2,044.23 = 388.93/x
  3. Step 3: Cross multiply
    1,362.80x = 2,044.23 × 388.93
  4. Step 4: Simplify right side
    1,362.80x = 795,057.26
  5. Step 5: Solve for x
    x = 795,057.26/1,362.80
  6. Step 6: Final answer
    x = 583.40

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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.