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Finding the Fourth Proportional to 1,254.04, 1,879.38 and 706

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Solution

The fourth proportional to 1,254.04, 1,879.38 and 706 is: 1,058.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,254.04 : 1,879.38 = 706 : x
  2. Step 2: Convert to fraction form
    1,254.04/1,879.38 = 706/x
  3. Step 3: Cross multiply
    1,254.04x = 1,879.38 × 706
  4. Step 4: Simplify right side
    1,254.04x = 1,326,842.28
  5. Step 5: Solve for x
    x = 1,326,842.28/1,254.04
  6. Step 6: Final answer
    x = 1,058.05

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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.