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Finding the Fourth Proportional to 631.08, 945.42 and 357.36

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Solution

The fourth proportional to 631.08, 945.42 and 357.36 is: 535.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.08 : 945.42 = 357.36 : x
  2. Step 2: Convert to fraction form
    631.08/945.42 = 357.36/x
  3. Step 3: Cross multiply
    631.08x = 945.42 × 357.36
  4. Step 4: Simplify right side
    631.08x = 337,853.50
  5. Step 5: Solve for x
    x = 337,853.50/631.08
  6. Step 6: Final answer
    x = 535.36

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Half scale
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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.