Home / 1,021.15-1,409.07-573.05

Finding the Fourth Proportional to 1,021.15, 1,409.07 and 573.05

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Solution

The fourth proportional to 1,021.15, 1,409.07 and 573.05 is: 790.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.15 : 1,409.07 = 573.05 : x
  2. Step 2: Convert to fraction form
    1,021.15/1,409.07 = 573.05/x
  3. Step 3: Cross multiply
    1,021.15x = 1,409.07 × 573.05
  4. Step 4: Simplify right side
    1,021.15x = 807,457.65
  5. Step 5: Solve for x
    x = 807,457.65/1,021.15
  6. Step 6: Final answer
    x = 790.73

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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.