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Finding the Fourth Proportional to 849.10, 1,170.84 and 653.08

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Solution

The fourth proportional to 849.10, 1,170.84 and 653.08 is: 900.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.10 : 1,170.84 = 653.08 : x
  2. Step 2: Convert to fraction form
    849.10/1,170.84 = 653.08/x
  3. Step 3: Cross multiply
    849.10x = 1,170.84 × 653.08
  4. Step 4: Simplify right side
    849.10x = 764,652.19
  5. Step 5: Solve for x
    x = 764,652.19/849.10
  6. Step 6: Final answer
    x = 900.54

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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.