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Finding the Fourth Proportional to 716.09, 988.13 and 454.10

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Solution

The fourth proportional to 716.09, 988.13 and 454.10 is: 626.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.09 : 988.13 = 454.10 : x
  2. Step 2: Convert to fraction form
    716.09/988.13 = 454.10/x
  3. Step 3: Cross multiply
    716.09x = 988.13 × 454.10
  4. Step 4: Simplify right side
    716.09x = 448,706.03
  5. Step 5: Solve for x
    x = 448,706.03/716.09
  6. Step 6: Final answer
    x = 626.61

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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.