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Finding the Fourth Proportional to 988.23, 1,484.45 and 623.27

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Solution

The fourth proportional to 988.23, 1,484.45 and 623.27 is: 936.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    988.23 : 1,484.45 = 623.27 : x
  2. Step 2: Convert to fraction form
    988.23/1,484.45 = 623.27/x
  3. Step 3: Cross multiply
    988.23x = 1,484.45 × 623.27
  4. Step 4: Simplify right side
    988.23x = 925,202.61
  5. Step 5: Solve for x
    x = 925,202.61/988.23
  6. Step 6: Final answer
    x = 936.22

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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.