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Finding the Fourth Proportional to 1,003.44, 1,384.71 and 583.81

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Solution

The fourth proportional to 1,003.44, 1,384.71 and 583.81 is: 805.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,003.44 : 1,384.71 = 583.81 : x
  2. Step 2: Convert to fraction form
    1,003.44/1,384.71 = 583.81/x
  3. Step 3: Cross multiply
    1,003.44x = 1,384.71 × 583.81
  4. Step 4: Simplify right side
    1,003.44x = 808,405.18
  5. Step 5: Solve for x
    x = 808,405.18/1,003.44
  6. Step 6: Final answer
    x = 805.63

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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.