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Finding the Fourth Proportional to 831.06, 1,246.58 and 283.62

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Solution

The fourth proportional to 831.06, 1,246.58 and 283.62 is: 425.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    831.06 : 1,246.58 = 283.62 : x
  2. Step 2: Convert to fraction form
    831.06/1,246.58 = 283.62/x
  3. Step 3: Cross multiply
    831.06x = 1,246.58 × 283.62
  4. Step 4: Simplify right side
    831.06x = 353,559.34
  5. Step 5: Solve for x
    x = 353,559.34/831.06
  6. Step 6: Final answer
    x = 425.43

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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.