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Finding the Fourth Proportional to 631.88, 871.93 and 369.85

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Solution

The fourth proportional to 631.88, 871.93 and 369.85 is: 510.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.88 : 871.93 = 369.85 : x
  2. Step 2: Convert to fraction form
    631.88/871.93 = 369.85/x
  3. Step 3: Cross multiply
    631.88x = 871.93 × 369.85
  4. Step 4: Simplify right side
    631.88x = 322,483.31
  5. Step 5: Solve for x
    x = 322,483.31/631.88
  6. Step 6: Final answer
    x = 510.36

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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.