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Finding the Fourth Proportional to 378.27, 564.59 and 325.98

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Solution

The fourth proportional to 378.27, 564.59 and 325.98 is: 486.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.27 : 564.59 = 325.98 : x
  2. Step 2: Convert to fraction form
    378.27/564.59 = 325.98/x
  3. Step 3: Cross multiply
    378.27x = 564.59 × 325.98
  4. Step 4: Simplify right side
    378.27x = 184,045.05
  5. Step 5: Solve for x
    x = 184,045.05/378.27
  6. Step 6: Final answer
    x = 486.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.