Home / 1,313.20-1,969.76-533.18

Finding the Fourth Proportional to 1,313.20, 1,969.76 and 533.18

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Solution

The fourth proportional to 1,313.20, 1,969.76 and 533.18 is: 799.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.20 : 1,969.76 = 533.18 : x
  2. Step 2: Convert to fraction form
    1,313.20/1,969.76 = 533.18/x
  3. Step 3: Cross multiply
    1,313.20x = 1,969.76 × 533.18
  4. Step 4: Simplify right side
    1,313.20x = 1,050,236.64
  5. Step 5: Solve for x
    x = 1,050,236.64/1,313.20
  6. Step 6: Final answer
    x = 799.75

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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.