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Finding the Fourth Proportional to 1,303.45, 1,798.80 and 713.99

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Solution

The fourth proportional to 1,303.45, 1,798.80 and 713.99 is: 985.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,303.45 : 1,798.80 = 713.99 : x
  2. Step 2: Convert to fraction form
    1,303.45/1,798.80 = 713.99/x
  3. Step 3: Cross multiply
    1,303.45x = 1,798.80 × 713.99
  4. Step 4: Simplify right side
    1,303.45x = 1,284,325.21
  5. Step 5: Solve for x
    x = 1,284,325.21/1,303.45
  6. Step 6: Final answer
    x = 985.33

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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.