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Finding the Fourth Proportional to 1,707.81, 2,356.41 and 999.51

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Solution

The fourth proportional to 1,707.81, 2,356.41 and 999.51 is: 1,379.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.81 : 2,356.41 = 999.51 : x
  2. Step 2: Convert to fraction form
    1,707.81/2,356.41 = 999.51/x
  3. Step 3: Cross multiply
    1,707.81x = 2,356.41 × 999.51
  4. Step 4: Simplify right side
    1,707.81x = 2,355,255.36
  5. Step 5: Solve for x
    x = 2,355,255.36/1,707.81
  6. Step 6: Final answer
    x = 1,379.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.