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Finding the Fourth Proportional to 1,341.78, 1,852.11 and 845.25

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Solution

The fourth proportional to 1,341.78, 1,852.11 and 845.25 is: 1,166.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.78 : 1,852.11 = 845.25 : x
  2. Step 2: Convert to fraction form
    1,341.78/1,852.11 = 845.25/x
  3. Step 3: Cross multiply
    1,341.78x = 1,852.11 × 845.25
  4. Step 4: Simplify right side
    1,341.78x = 1,565,495.98
  5. Step 5: Solve for x
    x = 1,565,495.98/1,341.78
  6. Step 6: Final answer
    x = 1,166.73

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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.