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Finding the Fourth Proportional to 1,062.71, 1,466.26 and 620.34

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Solution

The fourth proportional to 1,062.71, 1,466.26 and 620.34 is: 855.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.71 : 1,466.26 = 620.34 : x
  2. Step 2: Convert to fraction form
    1,062.71/1,466.26 = 620.34/x
  3. Step 3: Cross multiply
    1,062.71x = 1,466.26 × 620.34
  4. Step 4: Simplify right side
    1,062.71x = 909,579.73
  5. Step 5: Solve for x
    x = 909,579.73/1,062.71
  6. Step 6: Final answer
    x = 855.91

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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.