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Finding the Third Proportional to 618 and 945.19

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Solution

The third proportional to 618 and 945.19 is: 1,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    618 : 945.19 = 945.19 : x
  2. Step 2: Convert to fraction form
    618/945.19 = 945.19/x
  3. Step 3: Cross multiply
    618x = 945.19 × 945.19
  4. Step 4: Simplify right side
    618x = 893,379.41
  5. Step 5: Solve for x
    x = 893,379.41/618
  6. Step 6: Final answer
    x = 1,445.60

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.