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Finding the Fourth Proportional to 683.31, 1,024.10 and 436.42

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Solution

The fourth proportional to 683.31, 1,024.10 and 436.42 is: 654.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.31 : 1,024.10 = 436.42 : x
  2. Step 2: Convert to fraction form
    683.31/1,024.10 = 436.42/x
  3. Step 3: Cross multiply
    683.31x = 1,024.10 × 436.42
  4. Step 4: Simplify right side
    683.31x = 446,938.27
  5. Step 5: Solve for x
    x = 446,938.27/683.31
  6. Step 6: Final answer
    x = 654.08

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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.