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Finding the Fourth Proportional to 722.34, 996.57 and 719.10

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Solution

The fourth proportional to 722.34, 996.57 and 719.10 is: 992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.34 : 996.57 = 719.10 : x
  2. Step 2: Convert to fraction form
    722.34/996.57 = 719.10/x
  3. Step 3: Cross multiply
    722.34x = 996.57 × 719.10
  4. Step 4: Simplify right side
    722.34x = 716,633.49
  5. Step 5: Solve for x
    x = 716,633.49/722.34
  6. Step 6: Final answer
    x = 992.10

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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.