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Finding the Fourth Proportional to 786.22, 1,084.74 and 524.28

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Solution

The fourth proportional to 786.22, 1,084.74 and 524.28 is: 723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    786.22 : 1,084.74 = 524.28 : x
  2. Step 2: Convert to fraction form
    786.22/1,084.74 = 524.28/x
  3. Step 3: Cross multiply
    786.22x = 1,084.74 × 524.28
  4. Step 4: Simplify right side
    786.22x = 568,707.49
  5. Step 5: Solve for x
    x = 568,707.49/786.22
  6. Step 6: Final answer
    x = 723.34

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Double scale
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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.