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Finding the Fourth Proportional to 1,657.16, 2,485.74 and 1,007.74

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Solution

The fourth proportional to 1,657.16, 2,485.74 and 1,007.74 is: 1,511.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.16 : 2,485.74 = 1,007.74 : x
  2. Step 2: Convert to fraction form
    1,657.16/2,485.74 = 1,007.74/x
  3. Step 3: Cross multiply
    1,657.16x = 2,485.74 × 1,007.74
  4. Step 4: Simplify right side
    1,657.16x = 2,504,980.85
  5. Step 5: Solve for x
    x = 2,504,980.85/1,657.16
  6. Step 6: Final answer
    x = 1,511.61

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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.