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Finding the Fourth Proportional to 850.53, 1,173.19 and 708.37

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Solution

The fourth proportional to 850.53, 1,173.19 and 708.37 is: 977.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.53 : 1,173.19 = 708.37 : x
  2. Step 2: Convert to fraction form
    850.53/1,173.19 = 708.37/x
  3. Step 3: Cross multiply
    850.53x = 1,173.19 × 708.37
  4. Step 4: Simplify right side
    850.53x = 831,052.60
  5. Step 5: Solve for x
    x = 831,052.60/850.53
  6. Step 6: Final answer
    x = 977.10

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1.5x scale

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.