Home / 1,014.48-1,513.80-905.40

Finding the Fourth Proportional to 1,014.48, 1,513.80 and 905.40

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Solution

The fourth proportional to 1,014.48, 1,513.80 and 905.40 is: 1,351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,014.48 : 1,513.80 = 905.40 : x
  2. Step 2: Convert to fraction form
    1,014.48/1,513.80 = 905.40/x
  3. Step 3: Cross multiply
    1,014.48x = 1,513.80 × 905.40
  4. Step 4: Simplify right side
    1,014.48x = 1,370,594.52
  5. Step 5: Solve for x
    x = 1,370,594.52/1,014.48
  6. Step 6: Final answer
    x = 1,351.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.