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Finding the Fourth Proportional to 1,347.66, 1,858.95 and 850.05

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Solution

The fourth proportional to 1,347.66, 1,858.95 and 850.05 is: 1,172.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.66 : 1,858.95 = 850.05 : x
  2. Step 2: Convert to fraction form
    1,347.66/1,858.95 = 850.05/x
  3. Step 3: Cross multiply
    1,347.66x = 1,858.95 × 850.05
  4. Step 4: Simplify right side
    1,347.66x = 1,580,200.45
  5. Step 5: Solve for x
    x = 1,580,200.45/1,347.66
  6. Step 6: Final answer
    x = 1,172.55

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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.