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Finding the Fourth Proportional to 738.93, 1,020.24 and 459.28

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Solution

The fourth proportional to 738.93, 1,020.24 and 459.28 is: 634.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.93 : 1,020.24 = 459.28 : x
  2. Step 2: Convert to fraction form
    738.93/1,020.24 = 459.28/x
  3. Step 3: Cross multiply
    738.93x = 1,020.24 × 459.28
  4. Step 4: Simplify right side
    738.93x = 468,573.28
  5. Step 5: Solve for x
    x = 468,573.28/738.93
  6. Step 6: Final answer
    x = 634.12

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1.5x scale

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.