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Finding the Fourth Proportional to 1,477.40, 2,039.22 and 848.30

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Solution

The fourth proportional to 1,477.40, 2,039.22 and 848.30 is: 1,170.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.40 : 2,039.22 = 848.30 : x
  2. Step 2: Convert to fraction form
    1,477.40/2,039.22 = 848.30/x
  3. Step 3: Cross multiply
    1,477.40x = 2,039.22 × 848.30
  4. Step 4: Simplify right side
    1,477.40x = 1,729,870.33
  5. Step 5: Solve for x
    x = 1,729,870.33/1,477.40
  6. Step 6: Final answer
    x = 1,170.89

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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.