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Finding the Fourth Proportional to 1,194.47, 1,648.38 and 670.61

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Solution

The fourth proportional to 1,194.47, 1,648.38 and 670.61 is: 925.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.47 : 1,648.38 = 670.61 : x
  2. Step 2: Convert to fraction form
    1,194.47/1,648.38 = 670.61/x
  3. Step 3: Cross multiply
    1,194.47x = 1,648.38 × 670.61
  4. Step 4: Simplify right side
    1,194.47x = 1,105,420.11
  5. Step 5: Solve for x
    x = 1,105,420.11/1,194.47
  6. Step 6: Final answer
    x = 925.45

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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.