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Finding the Fourth Proportional to 974.33, 1,344.60 and 581.58

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Solution

The fourth proportional to 974.33, 1,344.60 and 581.58 is: 802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.33 : 1,344.60 = 581.58 : x
  2. Step 2: Convert to fraction form
    974.33/1,344.60 = 581.58/x
  3. Step 3: Cross multiply
    974.33x = 1,344.60 × 581.58
  4. Step 4: Simplify right side
    974.33x = 781,992.47
  5. Step 5: Solve for x
    x = 781,992.47/974.33
  6. Step 6: Final answer
    x = 802.60

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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.