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Finding the Fourth Proportional to 1,010.92, 1,395.48 and 656.95

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Solution

The fourth proportional to 1,010.92, 1,395.48 and 656.95 is: 906.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.92 : 1,395.48 = 656.95 : x
  2. Step 2: Convert to fraction form
    1,010.92/1,395.48 = 656.95/x
  3. Step 3: Cross multiply
    1,010.92x = 1,395.48 × 656.95
  4. Step 4: Simplify right side
    1,010.92x = 916,760.59
  5. Step 5: Solve for x
    x = 916,760.59/1,010.92
  6. Step 6: Final answer
    x = 906.86

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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.