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Finding the Fourth Proportional to 923.20, 1,273.38 and 701.68

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Solution

The fourth proportional to 923.20, 1,273.38 and 701.68 is: 967.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    923.20 : 1,273.38 = 701.68 : x
  2. Step 2: Convert to fraction form
    923.20/1,273.38 = 701.68/x
  3. Step 3: Cross multiply
    923.20x = 1,273.38 × 701.68
  4. Step 4: Simplify right side
    923.20x = 893,505.28
  5. Step 5: Solve for x
    x = 893,505.28/923.20
  6. Step 6: Final answer
    x = 967.84

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Half scale
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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.