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Finding the Fourth Proportional to 1,063.37, 1,465.39 and 768.08

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Solution

The fourth proportional to 1,063.37, 1,465.39 and 768.08 is: 1,058.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,063.37 : 1,465.39 = 768.08 : x
  2. Step 2: Convert to fraction form
    1,063.37/1,465.39 = 768.08/x
  3. Step 3: Cross multiply
    1,063.37x = 1,465.39 × 768.08
  4. Step 4: Simplify right side
    1,063.37x = 1,125,536.75
  5. Step 5: Solve for x
    x = 1,125,536.75/1,063.37
  6. Step 6: Final answer
    x = 1,058.46

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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.