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Finding the Fourth Proportional to 705.47, 971.12 and 610.91

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Solution

The fourth proportional to 705.47, 971.12 and 610.91 is: 840.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.47 : 971.12 = 610.91 : x
  2. Step 2: Convert to fraction form
    705.47/971.12 = 610.91/x
  3. Step 3: Cross multiply
    705.47x = 971.12 × 610.91
  4. Step 4: Simplify right side
    705.47x = 593,259.01
  5. Step 5: Solve for x
    x = 593,259.01/705.47
  6. Step 6: Final answer
    x = 840.94

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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.