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Finding the Fourth Proportional to 631.05, 944.55 and 558.15

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Solution

The fourth proportional to 631.05, 944.55 and 558.15 is: 835.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.05 : 944.55 = 558.15 : x
  2. Step 2: Convert to fraction form
    631.05/944.55 = 558.15/x
  3. Step 3: Cross multiply
    631.05x = 944.55 × 558.15
  4. Step 4: Simplify right side
    631.05x = 527,200.58
  5. Step 5: Solve for x
    x = 527,200.58/631.05
  6. Step 6: Final answer
    x = 835.43

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Double scale
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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.