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Finding the Fourth Proportional to 455.26, 681.60 and 352.73

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Solution

The fourth proportional to 455.26, 681.60 and 352.73 is: 528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.26 : 681.60 = 352.73 : x
  2. Step 2: Convert to fraction form
    455.26/681.60 = 352.73/x
  3. Step 3: Cross multiply
    455.26x = 681.60 × 352.73
  4. Step 4: Simplify right side
    455.26x = 240,420.77
  5. Step 5: Solve for x
    x = 240,420.77/455.26
  6. Step 6: Final answer
    x = 528.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.