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Finding the Fourth Proportional to 1,230.78, 1,846.44 and 365.04

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Solution

The fourth proportional to 1,230.78, 1,846.44 and 365.04 is: 547.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.78 : 1,846.44 = 365.04 : x
  2. Step 2: Convert to fraction form
    1,230.78/1,846.44 = 365.04/x
  3. Step 3: Cross multiply
    1,230.78x = 1,846.44 × 365.04
  4. Step 4: Simplify right side
    1,230.78x = 674,024.46
  5. Step 5: Solve for x
    x = 674,024.46/1,230.78
  6. Step 6: Final answer
    x = 547.64

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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.