Home / 1,603.12-2,403.24-629.92

Finding the Fourth Proportional to 1,603.12, 2,403.24 and 629.92

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Solution

The fourth proportional to 1,603.12, 2,403.24 and 629.92 is: 944.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.12 : 2,403.24 = 629.92 : x
  2. Step 2: Convert to fraction form
    1,603.12/2,403.24 = 629.92/x
  3. Step 3: Cross multiply
    1,603.12x = 2,403.24 × 629.92
  4. Step 4: Simplify right side
    1,603.12x = 1,513,848.94
  5. Step 5: Solve for x
    x = 1,513,848.94/1,603.12
  6. Step 6: Final answer
    x = 944.31

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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.