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Finding the Fourth Proportional to 704.94, 972.66 and 425.22

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Solution

The fourth proportional to 704.94, 972.66 and 425.22 is: 586.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.94 : 972.66 = 425.22 : x
  2. Step 2: Convert to fraction form
    704.94/972.66 = 425.22/x
  3. Step 3: Cross multiply
    704.94x = 972.66 × 425.22
  4. Step 4: Simplify right side
    704.94x = 413,594.49
  5. Step 5: Solve for x
    x = 413,594.49/704.94
  6. Step 6: Final answer
    x = 586.71

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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.