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Finding the Fourth Proportional to 713.11, 983.75 and 464.34

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Solution

The fourth proportional to 713.11, 983.75 and 464.34 is: 640.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.11 : 983.75 = 464.34 : x
  2. Step 2: Convert to fraction form
    713.11/983.75 = 464.34/x
  3. Step 3: Cross multiply
    713.11x = 983.75 × 464.34
  4. Step 4: Simplify right side
    713.11x = 456,794.48
  5. Step 5: Solve for x
    x = 456,794.48/713.11
  6. Step 6: Final answer
    x = 640.57

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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.