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Finding the Fourth Proportional to 712.15, 983.03 and 450.11

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Solution

The fourth proportional to 712.15, 983.03 and 450.11 is: 621.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.15 : 983.03 = 450.11 : x
  2. Step 2: Convert to fraction form
    712.15/983.03 = 450.11/x
  3. Step 3: Cross multiply
    712.15x = 983.03 × 450.11
  4. Step 4: Simplify right side
    712.15x = 442,471.84
  5. Step 5: Solve for x
    x = 442,471.84/712.15
  6. Step 6: Final answer
    x = 621.32

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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.