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Finding the Fourth Proportional to 529.63, 793.73 and 393.19

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Solution

The fourth proportional to 529.63, 793.73 and 393.19 is: 589.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.63 : 793.73 = 393.19 : x
  2. Step 2: Convert to fraction form
    529.63/793.73 = 393.19/x
  3. Step 3: Cross multiply
    529.63x = 793.73 × 393.19
  4. Step 4: Simplify right side
    529.63x = 312,084.73
  5. Step 5: Solve for x
    x = 312,084.73/529.63
  6. Step 6: Final answer
    x = 589.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.