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Finding the Fourth Proportional to 449.83, 620.77 and 263.45

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Solution

The fourth proportional to 449.83, 620.77 and 263.45 is: 363.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.83 : 620.77 = 263.45 : x
  2. Step 2: Convert to fraction form
    449.83/620.77 = 263.45/x
  3. Step 3: Cross multiply
    449.83x = 620.77 × 263.45
  4. Step 4: Simplify right side
    449.83x = 163,541.86
  5. Step 5: Solve for x
    x = 163,541.86/449.83
  6. Step 6: Final answer
    x = 363.56

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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.