Home / 1,220.18-1,830.61-490.27

Finding the Fourth Proportional to 1,220.18, 1,830.61 and 490.27

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Solution

The fourth proportional to 1,220.18, 1,830.61 and 490.27 is: 735.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.18 : 1,830.61 = 490.27 : x
  2. Step 2: Convert to fraction form
    1,220.18/1,830.61 = 490.27/x
  3. Step 3: Cross multiply
    1,220.18x = 1,830.61 × 490.27
  4. Step 4: Simplify right side
    1,220.18x = 897,493.16
  5. Step 5: Solve for x
    x = 897,493.16/1,220.18
  6. Step 6: Final answer
    x = 735.54

Related Problems

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Half scale
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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.