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Finding the Fourth Proportional to 1,062.60, 1,464.84 and 767.34

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Solution

The fourth proportional to 1,062.60, 1,464.84 and 767.34 is: 1,057.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.60 : 1,464.84 = 767.34 : x
  2. Step 2: Convert to fraction form
    1,062.60/1,464.84 = 767.34/x
  3. Step 3: Cross multiply
    1,062.60x = 1,464.84 × 767.34
  4. Step 4: Simplify right side
    1,062.60x = 1,124,030.33
  5. Step 5: Solve for x
    x = 1,124,030.33/1,062.60
  6. Step 6: Final answer
    x = 1,057.81

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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.