Home / 1,509.21-2,263.92-413.58

Finding the Fourth Proportional to 1,509.21, 2,263.92 and 413.58

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Solution

The fourth proportional to 1,509.21, 2,263.92 and 413.58 is: 620.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.21 : 2,263.92 = 413.58 : x
  2. Step 2: Convert to fraction form
    1,509.21/2,263.92 = 413.58/x
  3. Step 3: Cross multiply
    1,509.21x = 2,263.92 × 413.58
  4. Step 4: Simplify right side
    1,509.21x = 936,312.03
  5. Step 5: Solve for x
    x = 936,312.03/1,509.21
  6. Step 6: Final answer
    x = 620.40

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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.