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Finding the Fourth Proportional to 1,076.77, 1,485.98 and 604.68

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Solution

The fourth proportional to 1,076.77, 1,485.98 and 604.68 is: 834.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.77 : 1,485.98 = 604.68 : x
  2. Step 2: Convert to fraction form
    1,076.77/1,485.98 = 604.68/x
  3. Step 3: Cross multiply
    1,076.77x = 1,485.98 × 604.68
  4. Step 4: Simplify right side
    1,076.77x = 898,536.06
  5. Step 5: Solve for x
    x = 898,536.06/1,076.77
  6. Step 6: Final answer
    x = 834.47

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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.