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Finding the Fourth Proportional to 993.49, 1,490.25 and 344.24

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Solution

The fourth proportional to 993.49, 1,490.25 and 344.24 is: 516.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    993.49 : 1,490.25 = 344.24 : x
  2. Step 2: Convert to fraction form
    993.49/1,490.25 = 344.24/x
  3. Step 3: Cross multiply
    993.49x = 1,490.25 × 344.24
  4. Step 4: Simplify right side
    993.49x = 513,003.66
  5. Step 5: Solve for x
    x = 513,003.66/993.49
  6. Step 6: Final answer
    x = 516.37

Related Problems

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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.