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Finding the Fourth Proportional to 631.07, 945.81 and 283.91

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Solution

The fourth proportional to 631.07, 945.81 and 283.91 is: 425.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.07 : 945.81 = 283.91 : x
  2. Step 2: Convert to fraction form
    631.07/945.81 = 283.91/x
  3. Step 3: Cross multiply
    631.07x = 945.81 × 283.91
  4. Step 4: Simplify right side
    631.07x = 268,524.92
  5. Step 5: Solve for x
    x = 268,524.92/631.07
  6. Step 6: Final answer
    x = 425.51

Related Problems

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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.