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Finding the Fourth Proportional to 716.46, 988.46 and 436.62

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Solution

The fourth proportional to 716.46, 988.46 and 436.62 is: 602.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.46 : 988.46 = 436.62 : x
  2. Step 2: Convert to fraction form
    716.46/988.46 = 436.62/x
  3. Step 3: Cross multiply
    716.46x = 988.46 × 436.62
  4. Step 4: Simplify right side
    716.46x = 431,581.41
  5. Step 5: Solve for x
    x = 431,581.41/716.46
  6. Step 6: Final answer
    x = 602.38

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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.