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Finding the Fourth Proportional to 1,063.77, 1,467.68 and 665.50

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Solution

The fourth proportional to 1,063.77, 1,467.68 and 665.50 is: 918.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,063.77 : 1,467.68 = 665.50 : x
  2. Step 2: Convert to fraction form
    1,063.77/1,467.68 = 665.50/x
  3. Step 3: Cross multiply
    1,063.77x = 1,467.68 × 665.50
  4. Step 4: Simplify right side
    1,063.77x = 976,738.38
  5. Step 5: Solve for x
    x = 976,738.38/1,063.77
  6. Step 6: Final answer
    x = 918.19

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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.