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Finding the Fourth Proportional to 328.88, 493.20 and 184.64

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Solution

The fourth proportional to 328.88, 493.20 and 184.64 is: 276.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.88 : 493.20 = 184.64 : x
  2. Step 2: Convert to fraction form
    328.88/493.20 = 184.64/x
  3. Step 3: Cross multiply
    328.88x = 493.20 × 184.64
  4. Step 4: Simplify right side
    328.88x = 91,064.45
  5. Step 5: Solve for x
    x = 91,064.45/328.88
  6. Step 6: Final answer
    x = 276.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.