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Finding the Fourth Proportional to 849.51, 1,171.11 and 625.05

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Solution

The fourth proportional to 849.51, 1,171.11 and 625.05 is: 861.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.51 : 1,171.11 = 625.05 : x
  2. Step 2: Convert to fraction form
    849.51/1,171.11 = 625.05/x
  3. Step 3: Cross multiply
    849.51x = 1,171.11 × 625.05
  4. Step 4: Simplify right side
    849.51x = 732,002.31
  5. Step 5: Solve for x
    x = 732,002.31/849.51
  6. Step 6: Final answer
    x = 861.68

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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.