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Finding the Fourth Proportional to 569.46, 785.84 and 348.78

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Solution

The fourth proportional to 569.46, 785.84 and 348.78 is: 481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.46 : 785.84 = 348.78 : x
  2. Step 2: Convert to fraction form
    569.46/785.84 = 348.78/x
  3. Step 3: Cross multiply
    569.46x = 785.84 × 348.78
  4. Step 4: Simplify right side
    569.46x = 274,083.53
  5. Step 5: Solve for x
    x = 274,083.53/569.46
  6. Step 6: Final answer
    x = 481.30

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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.