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Finding the Fourth Proportional to 704.38, 1,054.95 and 395.77

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Solution

The fourth proportional to 704.38, 1,054.95 and 395.77 is: 592.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.38 : 1,054.95 = 395.77 : x
  2. Step 2: Convert to fraction form
    704.38/1,054.95 = 395.77/x
  3. Step 3: Cross multiply
    704.38x = 1,054.95 × 395.77
  4. Step 4: Simplify right side
    704.38x = 417,517.56
  5. Step 5: Solve for x
    x = 417,517.56/704.38
  6. Step 6: Final answer
    x = 592.74

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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.