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Finding the Fourth Proportional to 637.38, 880.43 and 513.51

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Solution

The fourth proportional to 637.38, 880.43 and 513.51 is: 709.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.38 : 880.43 = 513.51 : x
  2. Step 2: Convert to fraction form
    637.38/880.43 = 513.51/x
  3. Step 3: Cross multiply
    637.38x = 880.43 × 513.51
  4. Step 4: Simplify right side
    637.38x = 452,103.74
  5. Step 5: Solve for x
    x = 452,103.74/637.38
  6. Step 6: Final answer
    x = 709.32

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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.