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Finding the Fourth Proportional to 704.71, 1,056.39 and 461.44

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Solution

The fourth proportional to 704.71, 1,056.39 and 461.44 is: 691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    704.71 : 1,056.39 = 461.44 : x
  2. Step 2: Convert to fraction form
    704.71/1,056.39 = 461.44/x
  3. Step 3: Cross multiply
    704.71x = 1,056.39 × 461.44
  4. Step 4: Simplify right side
    704.71x = 487,460.60
  5. Step 5: Solve for x
    x = 487,460.60/704.71
  6. Step 6: Final answer
    x = 691.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.