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Finding the Fourth Proportional to 669.23, 1,007.73 and 497.10

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Solution

The fourth proportional to 669.23, 1,007.73 and 497.10 is: 748.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.23 : 1,007.73 = 497.10 : x
  2. Step 2: Convert to fraction form
    669.23/1,007.73 = 497.10/x
  3. Step 3: Cross multiply
    669.23x = 1,007.73 × 497.10
  4. Step 4: Simplify right side
    669.23x = 500,942.58
  5. Step 5: Solve for x
    x = 500,942.58/669.23
  6. Step 6: Final answer
    x = 748.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.