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Finding the Fourth Proportional to 631.44, 942.27 and 558.54

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Solution

The fourth proportional to 631.44, 942.27 and 558.54 is: 833.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.44 : 942.27 = 558.54 : x
  2. Step 2: Convert to fraction form
    631.44/942.27 = 558.54/x
  3. Step 3: Cross multiply
    631.44x = 942.27 × 558.54
  4. Step 4: Simplify right side
    631.44x = 526,295.49
  5. Step 5: Solve for x
    x = 526,295.49/631.44
  6. Step 6: Final answer
    x = 833.48

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.