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Finding the Fourth Proportional to 710.56, 979.86 and 612.28

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Solution

The fourth proportional to 710.56, 979.86 and 612.28 is: 844.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.56 : 979.86 = 612.28 : x
  2. Step 2: Convert to fraction form
    710.56/979.86 = 612.28/x
  3. Step 3: Cross multiply
    710.56x = 979.86 × 612.28
  4. Step 4: Simplify right side
    710.56x = 599,948.68
  5. Step 5: Solve for x
    x = 599,948.68/710.56
  6. Step 6: Final answer
    x = 844.33

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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.