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Finding the Fourth Proportional to 467.21, 696.63 and 454.45

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Solution

The fourth proportional to 467.21, 696.63 and 454.45 is: 677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.21 : 696.63 = 454.45 : x
  2. Step 2: Convert to fraction form
    467.21/696.63 = 454.45/x
  3. Step 3: Cross multiply
    467.21x = 696.63 × 454.45
  4. Step 4: Simplify right side
    467.21x = 316,583.50
  5. Step 5: Solve for x
    x = 316,583.50/467.21
  6. Step 6: Final answer
    x = 677.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.