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Finding the Fourth Proportional to 986.29, 1,478.75 and 466.00

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Solution

The fourth proportional to 986.29, 1,478.75 and 466.00 is: 698.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    986.29 : 1,478.75 = 466.00 : x
  2. Step 2: Convert to fraction form
    986.29/1,478.75 = 466.00/x
  3. Step 3: Cross multiply
    986.29x = 1,478.75 × 466.00
  4. Step 4: Simplify right side
    986.29x = 689,091.47
  5. Step 5: Solve for x
    x = 689,091.47/986.29
  6. Step 6: Final answer
    x = 698.67

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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.