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Finding the Fourth Proportional to 1,530.70, 2,294.76 and 664.36

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Solution

The fourth proportional to 1,530.70, 2,294.76 and 664.36 is: 995.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.70 : 2,294.76 = 664.36 : x
  2. Step 2: Convert to fraction form
    1,530.70/2,294.76 = 664.36/x
  3. Step 3: Cross multiply
    1,530.70x = 2,294.76 × 664.36
  4. Step 4: Simplify right side
    1,530.70x = 1,524,546.75
  5. Step 5: Solve for x
    x = 1,524,546.75/1,530.70
  6. Step 6: Final answer
    x = 995.98

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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.