Home / 1,553.79-2,330.77-629.21

Finding the Fourth Proportional to 1,553.79, 2,330.77 and 629.21

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Solution

The fourth proportional to 1,553.79, 2,330.77 and 629.21 is: 943.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.79 : 2,330.77 = 629.21 : x
  2. Step 2: Convert to fraction form
    1,553.79/2,330.77 = 629.21/x
  3. Step 3: Cross multiply
    1,553.79x = 2,330.77 × 629.21
  4. Step 4: Simplify right side
    1,553.79x = 1,466,543.79
  5. Step 5: Solve for x
    x = 1,466,543.79/1,553.79
  6. Step 6: Final answer
    x = 943.85

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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.