Home / 1,210.46-1,815.60-440.42

Finding the Fourth Proportional to 1,210.46, 1,815.60 and 440.42

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Solution

The fourth proportional to 1,210.46, 1,815.60 and 440.42 is: 660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.46 : 1,815.60 = 440.42 : x
  2. Step 2: Convert to fraction form
    1,210.46/1,815.60 = 440.42/x
  3. Step 3: Cross multiply
    1,210.46x = 1,815.60 × 440.42
  4. Step 4: Simplify right side
    1,210.46x = 799,626.55
  5. Step 5: Solve for x
    x = 799,626.55/1,210.46
  6. Step 6: Final answer
    x = 660.60

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1.5x scale

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.