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Finding the Fourth Proportional to 1,137.56, 1,707.18 and 848.12

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Solution

The fourth proportional to 1,137.56, 1,707.18 and 848.12 is: 1,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.56 : 1,707.18 = 848.12 : x
  2. Step 2: Convert to fraction form
    1,137.56/1,707.18 = 848.12/x
  3. Step 3: Cross multiply
    1,137.56x = 1,707.18 × 848.12
  4. Step 4: Simplify right side
    1,137.56x = 1,447,893.50
  5. Step 5: Solve for x
    x = 1,447,893.50/1,137.56
  6. Step 6: Final answer
    x = 1,272.81

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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.