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Finding the Fourth Proportional to 1,453.59, 2,005.92 and 790.44

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Solution

The fourth proportional to 1,453.59, 2,005.92 and 790.44 is: 1,090.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.59 : 2,005.92 = 790.44 : x
  2. Step 2: Convert to fraction form
    1,453.59/2,005.92 = 790.44/x
  3. Step 3: Cross multiply
    1,453.59x = 2,005.92 × 790.44
  4. Step 4: Simplify right side
    1,453.59x = 1,585,559.40
  5. Step 5: Solve for x
    x = 1,585,559.40/1,453.59
  6. Step 6: Final answer
    x = 1,090.79

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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.