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Finding the Fourth Proportional to 652.15, 900.17 and 619.09

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Solution

The fourth proportional to 652.15, 900.17 and 619.09 is: 854.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.15 : 900.17 = 619.09 : x
  2. Step 2: Convert to fraction form
    652.15/900.17 = 619.09/x
  3. Step 3: Cross multiply
    652.15x = 900.17 × 619.09
  4. Step 4: Simplify right side
    652.15x = 557,286.25
  5. Step 5: Solve for x
    x = 557,286.25/652.15
  6. Step 6: Final answer
    x = 854.54

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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.