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Finding the Fourth Proportional to 738.04, 1,018.51 and 423.30

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Solution

The fourth proportional to 738.04, 1,018.51 and 423.30 is: 584.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.04 : 1,018.51 = 423.30 : x
  2. Step 2: Convert to fraction form
    738.04/1,018.51 = 423.30/x
  3. Step 3: Cross multiply
    738.04x = 1,018.51 × 423.30
  4. Step 4: Simplify right side
    738.04x = 431,135.28
  5. Step 5: Solve for x
    x = 431,135.28/738.04
  6. Step 6: Final answer
    x = 584.16

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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.