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Finding the Fourth Proportional to 683.01, 942.51 and 388.32

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Solution

The fourth proportional to 683.01, 942.51 and 388.32 is: 535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.01 : 942.51 = 388.32 : x
  2. Step 2: Convert to fraction form
    683.01/942.51 = 388.32/x
  3. Step 3: Cross multiply
    683.01x = 942.51 × 388.32
  4. Step 4: Simplify right side
    683.01x = 365,995.48
  5. Step 5: Solve for x
    x = 365,995.48/683.01
  6. Step 6: Final answer
    x = 535.86

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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.