Home / 1,148.27-1,722.20-326.34

Finding the Fourth Proportional to 1,148.27, 1,722.20 and 326.34

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Solution

The fourth proportional to 1,148.27, 1,722.20 and 326.34 is: 489.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.27 : 1,722.20 = 326.34 : x
  2. Step 2: Convert to fraction form
    1,148.27/1,722.20 = 326.34/x
  3. Step 3: Cross multiply
    1,148.27x = 1,722.20 × 326.34
  4. Step 4: Simplify right side
    1,148.27x = 562,021.12
  5. Step 5: Solve for x
    x = 562,021.12/1,148.27
  6. Step 6: Final answer
    x = 489.45

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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.