Home / 1,620.04-2,430.10-465.80

Finding the Fourth Proportional to 1,620.04, 2,430.10 and 465.80

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Solution

The fourth proportional to 1,620.04, 2,430.10 and 465.80 is: 698.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.04 : 2,430.10 = 465.80 : x
  2. Step 2: Convert to fraction form
    1,620.04/2,430.10 = 465.80/x
  3. Step 3: Cross multiply
    1,620.04x = 2,430.10 × 465.80
  4. Step 4: Simplify right side
    1,620.04x = 1,131,940.58
  5. Step 5: Solve for x
    x = 1,131,940.58/1,620.04
  6. Step 6: Final answer
    x = 698.71

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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.