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Finding the Fourth Proportional to 455.41, 681.72 and 352.45

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Solution

The fourth proportional to 455.41, 681.72 and 352.45 is: 527.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.41 : 681.72 = 352.45 : x
  2. Step 2: Convert to fraction form
    455.41/681.72 = 352.45/x
  3. Step 3: Cross multiply
    455.41x = 681.72 × 352.45
  4. Step 4: Simplify right side
    455.41x = 240,272.21
  5. Step 5: Solve for x
    x = 240,272.21/455.41
  6. Step 6: Final answer
    x = 527.60

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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.