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Finding the Fourth Proportional to 449.51, 620.24 and 263.03

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Solution

The fourth proportional to 449.51, 620.24 and 263.03 is: 362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    449.51 : 620.24 = 263.03 : x
  2. Step 2: Convert to fraction form
    449.51/620.24 = 263.03/x
  3. Step 3: Cross multiply
    449.51x = 620.24 × 263.03
  4. Step 4: Simplify right side
    449.51x = 163,137.31
  5. Step 5: Solve for x
    x = 163,137.31/449.51
  6. Step 6: Final answer
    x = 362.93

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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.