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Finding the Fourth Proportional to 652.09, 979.00 and 378.38

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Solution

The fourth proportional to 652.09, 979.00 and 378.38 is: 568.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.09 : 979.00 = 378.38 : x
  2. Step 2: Convert to fraction form
    652.09/979.00 = 378.38/x
  3. Step 3: Cross multiply
    652.09x = 979.00 × 378.38
  4. Step 4: Simplify right side
    652.09x = 370,429.60
  5. Step 5: Solve for x
    x = 370,429.60/652.09
  6. Step 6: Final answer
    x = 568.07

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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.