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Finding the Fourth Proportional to 673.92, 930.76 and 618.58

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Solution

The fourth proportional to 673.92, 930.76 and 618.58 is: 854.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.92 : 930.76 = 618.58 : x
  2. Step 2: Convert to fraction form
    673.92/930.76 = 618.58/x
  3. Step 3: Cross multiply
    673.92x = 930.76 × 618.58
  4. Step 4: Simplify right side
    673.92x = 575,749.52
  5. Step 5: Solve for x
    x = 575,749.52/673.92
  6. Step 6: Final answer
    x = 854.33

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1.5x scale

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.