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Finding the Fourth Proportional to 746.10, 1,028.21 and 559.13

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Solution

The fourth proportional to 746.10, 1,028.21 and 559.13 is: 770.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.10 : 1,028.21 = 559.13 : x
  2. Step 2: Convert to fraction form
    746.10/1,028.21 = 559.13/x
  3. Step 3: Cross multiply
    746.10x = 1,028.21 × 559.13
  4. Step 4: Simplify right side
    746.10x = 574,895.12
  5. Step 5: Solve for x
    x = 574,895.12/746.10
  6. Step 6: Final answer
    x = 770.53

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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.