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Finding the Fourth Proportional to 1,313.96, 1,969.79 and 583.29

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Solution

The fourth proportional to 1,313.96, 1,969.79 and 583.29 is: 874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.96 : 1,969.79 = 583.29 : x
  2. Step 2: Convert to fraction form
    1,313.96/1,969.79 = 583.29/x
  3. Step 3: Cross multiply
    1,313.96x = 1,969.79 × 583.29
  4. Step 4: Simplify right side
    1,313.96x = 1,148,955.89
  5. Step 5: Solve for x
    x = 1,148,955.89/1,313.96
  6. Step 6: Final answer
    x = 874.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.