Home / 1,220.24-1,830.36-440.35

Finding the Fourth Proportional to 1,220.24, 1,830.36 and 440.35

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Solution

The fourth proportional to 1,220.24, 1,830.36 and 440.35 is: 660.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.24 : 1,830.36 = 440.35 : x
  2. Step 2: Convert to fraction form
    1,220.24/1,830.36 = 440.35/x
  3. Step 3: Cross multiply
    1,220.24x = 1,830.36 × 440.35
  4. Step 4: Simplify right side
    1,220.24x = 805,999.03
  5. Step 5: Solve for x
    x = 805,999.03/1,220.24
  6. Step 6: Final answer
    x = 660.53

Related Problems

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Double scale
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Similar ratio
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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.