Home / 1,323.30-1,984.29-490.32

Finding the Fourth Proportional to 1,323.30, 1,984.29 and 490.32

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Solution

The fourth proportional to 1,323.30, 1,984.29 and 490.32 is: 735.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,323.30 : 1,984.29 = 490.32 : x
  2. Step 2: Convert to fraction form
    1,323.30/1,984.29 = 490.32/x
  3. Step 3: Cross multiply
    1,323.30x = 1,984.29 × 490.32
  4. Step 4: Simplify right side
    1,323.30x = 972,937.07
  5. Step 5: Solve for x
    x = 972,937.07/1,323.30
  6. Step 6: Final answer
    x = 735.24

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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.