Home / 1,050.31-1,574.79-319.69

Finding the Fourth Proportional to 1,050.31, 1,574.79 and 319.69

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Solution

The fourth proportional to 1,050.31, 1,574.79 and 319.69 is: 479.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.31 : 1,574.79 = 319.69 : x
  2. Step 2: Convert to fraction form
    1,050.31/1,574.79 = 319.69/x
  3. Step 3: Cross multiply
    1,050.31x = 1,574.79 × 319.69
  4. Step 4: Simplify right side
    1,050.31x = 503,444.62
  5. Step 5: Solve for x
    x = 503,444.62/1,050.31
  6. Step 6: Final answer
    x = 479.33

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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.