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Finding the Fourth Proportional to 683.64, 942.72 and 608.70

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Solution

The fourth proportional to 683.64, 942.72 and 608.70 is: 839.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.64 : 942.72 = 608.70 : x
  2. Step 2: Convert to fraction form
    683.64/942.72 = 608.70/x
  3. Step 3: Cross multiply
    683.64x = 942.72 × 608.70
  4. Step 4: Simplify right side
    683.64x = 573,833.66
  5. Step 5: Solve for x
    x = 573,833.66/683.64
  6. Step 6: Final answer
    x = 839.38

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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.