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Finding the Fourth Proportional to 325.40, 448.88 and 263.30

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Solution

The fourth proportional to 325.40, 448.88 and 263.30 is: 363.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.40 : 448.88 = 263.30 : x
  2. Step 2: Convert to fraction form
    325.40/448.88 = 263.30/x
  3. Step 3: Cross multiply
    325.40x = 448.88 × 263.30
  4. Step 4: Simplify right side
    325.40x = 118,186.54
  5. Step 5: Solve for x
    x = 118,186.54/325.40
  6. Step 6: Final answer
    x = 363.21

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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.