Home / 830.03-1,244.61-440.25

Finding the Fourth Proportional to 830.03, 1,244.61 and 440.25

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Solution

The fourth proportional to 830.03, 1,244.61 and 440.25 is: 660.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.03 : 1,244.61 = 440.25 : x
  2. Step 2: Convert to fraction form
    830.03/1,244.61 = 440.25/x
  3. Step 3: Cross multiply
    830.03x = 1,244.61 × 440.25
  4. Step 4: Simplify right side
    830.03x = 547,931.13
  5. Step 5: Solve for x
    x = 547,931.13/830.03
  6. Step 6: Final answer
    x = 660.14

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Half scale
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Double scale
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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.