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Finding the Fourth Proportional to 500.23, 689.88 and 325.54

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Solution

The fourth proportional to 500.23, 689.88 and 325.54 is: 448.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.23 : 689.88 = 325.54 : x
  2. Step 2: Convert to fraction form
    500.23/689.88 = 325.54/x
  3. Step 3: Cross multiply
    500.23x = 689.88 × 325.54
  4. Step 4: Simplify right side
    500.23x = 224,583.54
  5. Step 5: Solve for x
    x = 224,583.54/500.23
  6. Step 6: Final answer
    x = 448.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.