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Finding the Fourth Proportional to 630.41, 945.36 and 191.52

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Solution

The fourth proportional to 630.41, 945.36 and 191.52 is: 287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.41 : 945.36 = 191.52 : x
  2. Step 2: Convert to fraction form
    630.41/945.36 = 191.52/x
  3. Step 3: Cross multiply
    630.41x = 945.36 × 191.52
  4. Step 4: Simplify right side
    630.41x = 181,055.35
  5. Step 5: Solve for x
    x = 181,055.35/630.41
  6. Step 6: Final answer
    x = 287.20

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Half scale
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Double scale
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Similar ratio
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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.