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Finding the Fourth Proportional to 971.92, 1,454.64 and 605.92

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Solution

The fourth proportional to 971.92, 1,454.64 and 605.92 is: 906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    971.92 : 1,454.64 = 605.92 : x
  2. Step 2: Convert to fraction form
    971.92/1,454.64 = 605.92/x
  3. Step 3: Cross multiply
    971.92x = 1,454.64 × 605.92
  4. Step 4: Simplify right side
    971.92x = 881,395.47
  5. Step 5: Solve for x
    x = 881,395.47/971.92
  6. Step 6: Final answer
    x = 906.86

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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.