Home / 1,525.35-2,287.97-429.69

Finding the Fourth Proportional to 1,525.35, 2,287.97 and 429.69

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Solution

The fourth proportional to 1,525.35, 2,287.97 and 429.69 is: 644.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,525.35 : 2,287.97 = 429.69 : x
  2. Step 2: Convert to fraction form
    1,525.35/2,287.97 = 429.69/x
  3. Step 3: Cross multiply
    1,525.35x = 2,287.97 × 429.69
  4. Step 4: Simplify right side
    1,525.35x = 983,112.65
  5. Step 5: Solve for x
    x = 983,112.65/1,525.35
  6. Step 6: Final answer
    x = 644.52

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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.