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Finding the Fourth Proportional to 1,010.92, 1,395.48 and 656.96

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Solution

The fourth proportional to 1,010.92, 1,395.48 and 656.96 is: 906.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.92 : 1,395.48 = 656.96 : x
  2. Step 2: Convert to fraction form
    1,010.92/1,395.48 = 656.96/x
  3. Step 3: Cross multiply
    1,010.92x = 1,395.48 × 656.96
  4. Step 4: Simplify right side
    1,010.92x = 916,774.54
  5. Step 5: Solve for x
    x = 916,774.54/1,010.92
  6. Step 6: Final answer
    x = 906.87

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1.5x scale

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.