Home / 1,240.19-1,860.28-470.69

Finding the Fourth Proportional to 1,240.19, 1,860.28 and 470.69

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Solution

The fourth proportional to 1,240.19, 1,860.28 and 470.69 is: 706.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.19 : 1,860.28 = 470.69 : x
  2. Step 2: Convert to fraction form
    1,240.19/1,860.28 = 470.69/x
  3. Step 3: Cross multiply
    1,240.19x = 1,860.28 × 470.69
  4. Step 4: Simplify right side
    1,240.19x = 875,615.19
  5. Step 5: Solve for x
    x = 875,615.19/1,240.19
  6. Step 6: Final answer
    x = 706.03

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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.