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Finding the Fourth Proportional to 325.16, 448.66 and 208.76

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Solution

The fourth proportional to 325.16, 448.66 and 208.76 is: 288.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.16 : 448.66 = 208.76 : x
  2. Step 2: Convert to fraction form
    325.16/448.66 = 208.76/x
  3. Step 3: Cross multiply
    325.16x = 448.66 × 208.76
  4. Step 4: Simplify right side
    325.16x = 93,662.26
  5. Step 5: Solve for x
    x = 93,662.26/325.16
  6. Step 6: Final answer
    x = 288.05

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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.