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Finding the Fourth Proportional to 1,230.86, 1,845.48 and 499.58

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Solution

The fourth proportional to 1,230.86, 1,845.48 and 499.58 is: 749.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.86 : 1,845.48 = 499.58 : x
  2. Step 2: Convert to fraction form
    1,230.86/1,845.48 = 499.58/x
  3. Step 3: Cross multiply
    1,230.86x = 1,845.48 × 499.58
  4. Step 4: Simplify right side
    1,230.86x = 921,964.90
  5. Step 5: Solve for x
    x = 921,964.90/1,230.86
  6. Step 6: Final answer
    x = 749.04

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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.