Home / 825.03-1,237.55-440.28

Finding the Fourth Proportional to 825.03, 1,237.55 and 440.28

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Solution

The fourth proportional to 825.03, 1,237.55 and 440.28 is: 660.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    825.03 : 1,237.55 = 440.28 : x
  2. Step 2: Convert to fraction form
    825.03/1,237.55 = 440.28/x
  3. Step 3: Cross multiply
    825.03x = 1,237.55 × 440.28
  4. Step 4: Simplify right side
    825.03x = 544,866.31
  5. Step 5: Solve for x
    x = 544,866.31/825.03
  6. Step 6: Final answer
    x = 660.42

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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.