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Finding the Fourth Proportional to 683.07, 942.65 and 372.57

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Solution

The fourth proportional to 683.07, 942.65 and 372.57 is: 514.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.07 : 942.65 = 372.57 : x
  2. Step 2: Convert to fraction form
    683.07/942.65 = 372.57/x
  3. Step 3: Cross multiply
    683.07x = 942.65 × 372.57
  4. Step 4: Simplify right side
    683.07x = 351,201.25
  5. Step 5: Solve for x
    x = 351,201.25/683.07
  6. Step 6: Final answer
    x = 514.15

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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.