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Finding the Fourth Proportional to 1,010.36, 1,394.13 and 656.77

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Solution

The fourth proportional to 1,010.36, 1,394.13 and 656.77 is: 906.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.36 : 1,394.13 = 656.77 : x
  2. Step 2: Convert to fraction form
    1,010.36/1,394.13 = 656.77/x
  3. Step 3: Cross multiply
    1,010.36x = 1,394.13 × 656.77
  4. Step 4: Simplify right side
    1,010.36x = 915,615.79
  5. Step 5: Solve for x
    x = 915,615.79/1,010.36
  6. Step 6: Final answer
    x = 906.23

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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.