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Finding the Fourth Proportional to 631.45, 867.75 and 602.51

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Solution

The fourth proportional to 631.45, 867.75 and 602.51 is: 827.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.45 : 867.75 = 602.51 : x
  2. Step 2: Convert to fraction form
    631.45/867.75 = 602.51/x
  3. Step 3: Cross multiply
    631.45x = 867.75 × 602.51
  4. Step 4: Simplify right side
    631.45x = 522,825.04
  5. Step 5: Solve for x
    x = 522,825.04/631.45
  6. Step 6: Final answer
    x = 827.98

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.