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Finding the Fourth Proportional to 746.82, 1,030.58 and 415.26

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Solution

The fourth proportional to 746.82, 1,030.58 and 415.26 is: 573.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.82 : 1,030.58 = 415.26 : x
  2. Step 2: Convert to fraction form
    746.82/1,030.58 = 415.26/x
  3. Step 3: Cross multiply
    746.82x = 1,030.58 × 415.26
  4. Step 4: Simplify right side
    746.82x = 427,958.65
  5. Step 5: Solve for x
    x = 427,958.65/746.82
  6. Step 6: Final answer
    x = 573.04

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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.