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Finding the Fourth Proportional to 1,097.15, 1,644.91 and 658.33

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Solution

The fourth proportional to 1,097.15, 1,644.91 and 658.33 is: 987.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097.15 : 1,644.91 = 658.33 : x
  2. Step 2: Convert to fraction form
    1,097.15/1,644.91 = 658.33/x
  3. Step 3: Cross multiply
    1,097.15x = 1,644.91 × 658.33
  4. Step 4: Simplify right side
    1,097.15x = 1,082,887.84
  5. Step 5: Solve for x
    x = 1,082,887.84/1,097.15
  6. Step 6: Final answer
    x = 987.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.