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Finding the Fourth Proportional to 652.44, 978.66 and 165.49

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Solution

The fourth proportional to 652.44, 978.66 and 165.49 is: 248.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.44 : 978.66 = 165.49 : x
  2. Step 2: Convert to fraction form
    652.44/978.66 = 165.49/x
  3. Step 3: Cross multiply
    652.44x = 978.66 × 165.49
  4. Step 4: Simplify right side
    652.44x = 161,958.44
  5. Step 5: Solve for x
    x = 161,958.44/652.44
  6. Step 6: Final answer
    x = 248.24

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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.