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Finding the Fourth Proportional to 683.82, 942.03 and 642.06

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Solution

The fourth proportional to 683.82, 942.03 and 642.06 is: 884.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.82 : 942.03 = 642.06 : x
  2. Step 2: Convert to fraction form
    683.82/942.03 = 642.06/x
  3. Step 3: Cross multiply
    683.82x = 942.03 × 642.06
  4. Step 4: Simplify right side
    683.82x = 604,839.78
  5. Step 5: Solve for x
    x = 604,839.78/683.82
  6. Step 6: Final answer
    x = 884.50

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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.