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Finding the Fourth Proportional to 569.78, 785.82 and 348.66

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Solution

The fourth proportional to 569.78, 785.82 and 348.66 is: 480.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.78 : 785.82 = 348.66 : x
  2. Step 2: Convert to fraction form
    569.78/785.82 = 348.66/x
  3. Step 3: Cross multiply
    569.78x = 785.82 × 348.66
  4. Step 4: Simplify right side
    569.78x = 273,984.00
  5. Step 5: Solve for x
    x = 273,984.00/569.78
  6. Step 6: Final answer
    x = 480.86

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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.