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Finding the Fourth Proportional to 738.06, 1,018.54 and 423.29

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Solution

The fourth proportional to 738.06, 1,018.54 and 423.29 is: 584.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.06 : 1,018.54 = 423.29 : x
  2. Step 2: Convert to fraction form
    738.06/1,018.54 = 423.29/x
  3. Step 3: Cross multiply
    738.06x = 1,018.54 × 423.29
  4. Step 4: Simplify right side
    738.06x = 431,132.70
  5. Step 5: Solve for x
    x = 431,132.70/738.06
  6. Step 6: Final answer
    x = 584.15

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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.