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Finding the Fourth Proportional to 713.08, 983.64 and 450.64

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Solution

The fourth proportional to 713.08, 983.64 and 450.64 is: 621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.08 : 983.64 = 450.64 : x
  2. Step 2: Convert to fraction form
    713.08/983.64 = 450.64/x
  3. Step 3: Cross multiply
    713.08x = 983.64 × 450.64
  4. Step 4: Simplify right side
    713.08x = 443,267.53
  5. Step 5: Solve for x
    x = 443,267.53/713.08
  6. Step 6: Final answer
    x = 621.62

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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.