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Finding the Fourth Proportional to 663.98, 995.82 and 253.04

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Solution

The fourth proportional to 663.98, 995.82 and 253.04 is: 379.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.98 : 995.82 = 253.04 : x
  2. Step 2: Convert to fraction form
    663.98/995.82 = 253.04/x
  3. Step 3: Cross multiply
    663.98x = 995.82 × 253.04
  4. Step 4: Simplify right side
    663.98x = 251,982.29
  5. Step 5: Solve for x
    x = 251,982.29/663.98
  6. Step 6: Final answer
    x = 379.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 664.98, 997.32 and 254.04
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.