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Finding the Fourth Proportional to 453.66, 621.98 and 445.46

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Solution

The fourth proportional to 453.66, 621.98 and 445.46 is: 610.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.66 : 621.98 = 445.46 : x
  2. Step 2: Convert to fraction form
    453.66/621.98 = 445.46/x
  3. Step 3: Cross multiply
    453.66x = 621.98 × 445.46
  4. Step 4: Simplify right side
    453.66x = 277,068.21
  5. Step 5: Solve for x
    x = 277,068.21/453.66
  6. Step 6: Final answer
    x = 610.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.