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Finding the Fourth Proportional to 746.92, 1,029.27 and 715.06

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Solution

The fourth proportional to 746.92, 1,029.27 and 715.06 is: 985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.92 : 1,029.27 = 715.06 : x
  2. Step 2: Convert to fraction form
    746.92/1,029.27 = 715.06/x
  3. Step 3: Cross multiply
    746.92x = 1,029.27 × 715.06
  4. Step 4: Simplify right side
    746.92x = 735,989.81
  5. Step 5: Solve for x
    x = 735,989.81/746.92
  6. Step 6: Final answer
    x = 985.37

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Double scale
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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.