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Finding the Fourth Proportional to 674.76, 931.92 and 453.33

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Solution

The fourth proportional to 674.76, 931.92 and 453.33 is: 626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.76 : 931.92 = 453.33 : x
  2. Step 2: Convert to fraction form
    674.76/931.92 = 453.33/x
  3. Step 3: Cross multiply
    674.76x = 931.92 × 453.33
  4. Step 4: Simplify right side
    674.76x = 422,467.29
  5. Step 5: Solve for x
    x = 422,467.29/674.76
  6. Step 6: Final answer
    x = 626.10

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.