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Finding the Fourth Proportional to 704.94, 1,061.09 and 637.86

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Solution

The fourth proportional to 704.94, 1,061.09 and 637.86 is: 960.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.94 : 1,061.09 = 637.86 : x
  2. Step 2: Convert to fraction form
    704.94/1,061.09 = 637.86/x
  3. Step 3: Cross multiply
    704.94x = 1,061.09 × 637.86
  4. Step 4: Simplify right side
    704.94x = 676,823.68
  5. Step 5: Solve for x
    x = 676,823.68/704.94
  6. Step 6: Final answer
    x = 960.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.