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Finding the Fourth Proportional to 683.32, 943.20 and 578.98

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Solution

The fourth proportional to 683.32, 943.20 and 578.98 is: 799.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.32 : 943.20 = 578.98 : x
  2. Step 2: Convert to fraction form
    683.32/943.20 = 578.98/x
  3. Step 3: Cross multiply
    683.32x = 943.20 × 578.98
  4. Step 4: Simplify right side
    683.32x = 546,093.94
  5. Step 5: Solve for x
    x = 546,093.94/683.32
  6. Step 6: Final answer
    x = 799.18

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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.