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Finding the Fourth Proportional to 974.76, 1,344.60 and 601.66

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Solution

The fourth proportional to 974.76, 1,344.60 and 601.66 is: 829.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.76 : 1,344.60 = 601.66 : x
  2. Step 2: Convert to fraction form
    974.76/1,344.60 = 601.66/x
  3. Step 3: Cross multiply
    974.76x = 1,344.60 × 601.66
  4. Step 4: Simplify right side
    974.76x = 808,992.04
  5. Step 5: Solve for x
    x = 808,992.04/974.76
  6. Step 6: Final answer
    x = 829.94

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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.