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Finding the Fourth Proportional to 722.63, 997.34 and 457.29

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Solution

The fourth proportional to 722.63, 997.34 and 457.29 is: 631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    722.63 : 997.34 = 457.29 : x
  2. Step 2: Convert to fraction form
    722.63/997.34 = 457.29/x
  3. Step 3: Cross multiply
    722.63x = 997.34 × 457.29
  4. Step 4: Simplify right side
    722.63x = 456,073.61
  5. Step 5: Solve for x
    x = 456,073.61/722.63
  6. Step 6: Final answer
    x = 631.13

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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.