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Finding the Fourth Proportional to 712.24, 983.12 and 450.32

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Solution

The fourth proportional to 712.24, 983.12 and 450.32 is: 621.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.24 : 983.12 = 450.32 : x
  2. Step 2: Convert to fraction form
    712.24/983.12 = 450.32/x
  3. Step 3: Cross multiply
    712.24x = 983.12 × 450.32
  4. Step 4: Simplify right side
    712.24x = 442,718.60
  5. Step 5: Solve for x
    x = 442,718.60/712.24
  6. Step 6: Final answer
    x = 621.59

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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.