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Finding the Fourth Proportional to 830.83, 1,246.25 and 283.02

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Solution

The fourth proportional to 830.83, 1,246.25 and 283.02 is: 424.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    830.83 : 1,246.25 = 283.02 : x
  2. Step 2: Convert to fraction form
    830.83/1,246.25 = 283.02/x
  3. Step 3: Cross multiply
    830.83x = 1,246.25 × 283.02
  4. Step 4: Simplify right side
    830.83x = 352,713.68
  5. Step 5: Solve for x
    x = 352,713.68/830.83
  6. Step 6: Final answer
    x = 424.53

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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.