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Finding the Fourth Proportional to 631.45, 867.76 and 602.92

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Solution

The fourth proportional to 631.45, 867.76 and 602.92 is: 828.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.45 : 867.76 = 602.92 : x
  2. Step 2: Convert to fraction form
    631.45/867.76 = 602.92/x
  3. Step 3: Cross multiply
    631.45x = 867.76 × 602.92
  4. Step 4: Simplify right side
    631.45x = 523,189.86
  5. Step 5: Solve for x
    x = 523,189.86/631.45
  6. Step 6: Final answer
    x = 828.55

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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.