Home / 1,029.24-1,420.35-563.49

Finding the Fourth Proportional to 1,029.24, 1,420.35 and 563.49

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Solution

The fourth proportional to 1,029.24, 1,420.35 and 563.49 is: 777.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.24 : 1,420.35 = 563.49 : x
  2. Step 2: Convert to fraction form
    1,029.24/1,420.35 = 563.49/x
  3. Step 3: Cross multiply
    1,029.24x = 1,420.35 × 563.49
  4. Step 4: Simplify right side
    1,029.24x = 800,350.91
  5. Step 5: Solve for x
    x = 800,350.91/1,029.24
  6. Step 6: Final answer
    x = 777.61

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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.