Home / 1,219.60-1,829.36-488.98

Finding the Fourth Proportional to 1,219.60, 1,829.36 and 488.98

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Solution

The fourth proportional to 1,219.60, 1,829.36 and 488.98 is: 733.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.60 : 1,829.36 = 488.98 : x
  2. Step 2: Convert to fraction form
    1,219.60/1,829.36 = 488.98/x
  3. Step 3: Cross multiply
    1,219.60x = 1,829.36 × 488.98
  4. Step 4: Simplify right side
    1,219.60x = 894,520.45
  5. Step 5: Solve for x
    x = 894,520.45/1,219.60
  6. Step 6: Final answer
    x = 733.45

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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.