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Finding the Fourth Proportional to 365.94, 504.78 and 278.46

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Solution

The fourth proportional to 365.94, 504.78 and 278.46 is: 384.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.94 : 504.78 = 278.46 : x
  2. Step 2: Convert to fraction form
    365.94/504.78 = 278.46/x
  3. Step 3: Cross multiply
    365.94x = 504.78 × 278.46
  4. Step 4: Simplify right side
    365.94x = 140,561.04
  5. Step 5: Solve for x
    x = 140,561.04/365.94
  6. Step 6: Final answer
    x = 384.11

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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.