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Finding the Fourth Proportional to 952.75, 1,315.34 and 719.47

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Solution

The fourth proportional to 952.75, 1,315.34 and 719.47 is: 993.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.75 : 1,315.34 = 719.47 : x
  2. Step 2: Convert to fraction form
    952.75/1,315.34 = 719.47/x
  3. Step 3: Cross multiply
    952.75x = 1,315.34 × 719.47
  4. Step 4: Simplify right side
    952.75x = 946,344.07
  5. Step 5: Solve for x
    x = 946,344.07/952.75
  6. Step 6: Final answer
    x = 993.28

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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.