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Finding the Fourth Proportional to 1,344.98, 1,856.56 and 847.60

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Solution

The fourth proportional to 1,344.98, 1,856.56 and 847.60 is: 1,170.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.98 : 1,856.56 = 847.60 : x
  2. Step 2: Convert to fraction form
    1,344.98/1,856.56 = 847.60/x
  3. Step 3: Cross multiply
    1,344.98x = 1,856.56 × 847.60
  4. Step 4: Simplify right side
    1,344.98x = 1,573,620.26
  5. Step 5: Solve for x
    x = 1,573,620.26/1,344.98
  6. Step 6: Final answer
    x = 1,170.00

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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.