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Finding the Fourth Proportional to 637.69, 880.31 and 451.33

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Solution

The fourth proportional to 637.69, 880.31 and 451.33 is: 623.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.69 : 880.31 = 451.33 : x
  2. Step 2: Convert to fraction form
    637.69/880.31 = 451.33/x
  3. Step 3: Cross multiply
    637.69x = 880.31 × 451.33
  4. Step 4: Simplify right side
    637.69x = 397,310.31
  5. Step 5: Solve for x
    x = 397,310.31/637.69
  6. Step 6: Final answer
    x = 623.05

Related Problems

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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.