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Finding the Fourth Proportional to 704.19, 1,054.29 and 395.49

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Solution

The fourth proportional to 704.19, 1,054.29 and 395.49 is: 592.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.19 : 1,054.29 = 395.49 : x
  2. Step 2: Convert to fraction form
    704.19/1,054.29 = 395.49/x
  3. Step 3: Cross multiply
    704.19x = 1,054.29 × 395.49
  4. Step 4: Simplify right side
    704.19x = 416,961.15
  5. Step 5: Solve for x
    x = 416,961.15/704.19
  6. Step 6: Final answer
    x = 592.11

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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.