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Finding the Fourth Proportional to 784.88, 1,082.98 and 453.23

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Solution

The fourth proportional to 784.88, 1,082.98 and 453.23 is: 625.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    784.88 : 1,082.98 = 453.23 : x
  2. Step 2: Convert to fraction form
    784.88/1,082.98 = 453.23/x
  3. Step 3: Cross multiply
    784.88x = 1,082.98 × 453.23
  4. Step 4: Simplify right side
    784.88x = 490,839.03
  5. Step 5: Solve for x
    x = 490,839.03/784.88
  6. Step 6: Final answer
    x = 625.37

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Double scale
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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.