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Finding the Fourth Proportional to 746.96, 1,030.34 and 513.68

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Solution

The fourth proportional to 746.96, 1,030.34 and 513.68 is: 708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.96 : 1,030.34 = 513.68 : x
  2. Step 2: Convert to fraction form
    746.96/1,030.34 = 513.68/x
  3. Step 3: Cross multiply
    746.96x = 1,030.34 × 513.68
  4. Step 4: Simplify right side
    746.96x = 529,265.05
  5. Step 5: Solve for x
    x = 529,265.05/746.96
  6. Step 6: Final answer
    x = 708.56

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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.