Home / 1,055.65-1,583.75-325.21

Finding the Fourth Proportional to 1,055.65, 1,583.75 and 325.21

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Solution

The fourth proportional to 1,055.65, 1,583.75 and 325.21 is: 487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.65 : 1,583.75 = 325.21 : x
  2. Step 2: Convert to fraction form
    1,055.65/1,583.75 = 325.21/x
  3. Step 3: Cross multiply
    1,055.65x = 1,583.75 × 325.21
  4. Step 4: Simplify right side
    1,055.65x = 515,051.34
  5. Step 5: Solve for x
    x = 515,051.34/1,055.65
  6. Step 6: Final answer
    x = 487.90

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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.