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Finding the Fourth Proportional to 738.52, 1,019.10 and 427.96

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Solution

The fourth proportional to 738.52, 1,019.10 and 427.96 is: 590.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.52 : 1,019.10 = 427.96 : x
  2. Step 2: Convert to fraction form
    738.52/1,019.10 = 427.96/x
  3. Step 3: Cross multiply
    738.52x = 1,019.10 × 427.96
  4. Step 4: Simplify right side
    738.52x = 436,134.04
  5. Step 5: Solve for x
    x = 436,134.04/738.52
  6. Step 6: Final answer
    x = 590.55

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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.