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Finding the Fourth Proportional to 631.87, 872.81 and 435.04

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Solution

The fourth proportional to 631.87, 872.81 and 435.04 is: 600.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.87 : 872.81 = 435.04 : x
  2. Step 2: Convert to fraction form
    631.87/872.81 = 435.04/x
  3. Step 3: Cross multiply
    631.87x = 872.81 × 435.04
  4. Step 4: Simplify right side
    631.87x = 379,707.26
  5. Step 5: Solve for x
    x = 379,707.26/631.87
  6. Step 6: Final answer
    x = 600.93

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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.