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Finding the Fourth Proportional to 1,194.29, 1,648.19 and 670.31

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Solution

The fourth proportional to 1,194.29, 1,648.19 and 670.31 is: 925.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.29 : 1,648.19 = 670.31 : x
  2. Step 2: Convert to fraction form
    1,194.29/1,648.19 = 670.31/x
  3. Step 3: Cross multiply
    1,194.29x = 1,648.19 × 670.31
  4. Step 4: Simplify right side
    1,194.29x = 1,104,798.24
  5. Step 5: Solve for x
    x = 1,104,798.24/1,194.29
  6. Step 6: Final answer
    x = 925.07

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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.