Home / 1,125.07-1,686.45-539.22

Finding the Fourth Proportional to 1,125.07, 1,686.45 and 539.22

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Solution

The fourth proportional to 1,125.07, 1,686.45 and 539.22 is: 808.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125.07 : 1,686.45 = 539.22 : x
  2. Step 2: Convert to fraction form
    1,125.07/1,686.45 = 539.22/x
  3. Step 3: Cross multiply
    1,125.07x = 1,686.45 × 539.22
  4. Step 4: Simplify right side
    1,125.07x = 909,359.14
  5. Step 5: Solve for x
    x = 909,359.14/1,125.07
  6. Step 6: Final answer
    x = 808.27

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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.