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Finding the Fourth Proportional to 1,137.80, 1,707.06 and 705.26

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Solution

The fourth proportional to 1,137.80, 1,707.06 and 705.26 is: 1,058.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.80 : 1,707.06 = 705.26 : x
  2. Step 2: Convert to fraction form
    1,137.80/1,707.06 = 705.26/x
  3. Step 3: Cross multiply
    1,137.80x = 1,707.06 × 705.26
  4. Step 4: Simplify right side
    1,137.80x = 1,203,921.14
  5. Step 5: Solve for x
    x = 1,203,921.14/1,137.80
  6. Step 6: Final answer
    x = 1,058.11

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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.