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Finding the Fourth Proportional to 683.30, 1,023.72 and 610.94

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Solution

The fourth proportional to 683.30, 1,023.72 and 610.94 is: 915.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.30 : 1,023.72 = 610.94 : x
  2. Step 2: Convert to fraction form
    683.30/1,023.72 = 610.94/x
  3. Step 3: Cross multiply
    683.30x = 1,023.72 × 610.94
  4. Step 4: Simplify right side
    683.30x = 625,431.50
  5. Step 5: Solve for x
    x = 625,431.50/683.30
  6. Step 6: Final answer
    x = 915.31

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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.