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Finding the Fourth Proportional to 325.94, 448.60 and 278.55

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Solution

The fourth proportional to 325.94, 448.60 and 278.55 is: 383.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.94 : 448.60 = 278.55 : x
  2. Step 2: Convert to fraction form
    325.94/448.60 = 278.55/x
  3. Step 3: Cross multiply
    325.94x = 448.60 × 278.55
  4. Step 4: Simplify right side
    325.94x = 124,957.53
  5. Step 5: Solve for x
    x = 124,957.53/325.94
  6. Step 6: Final answer
    x = 383.38

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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.