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Finding the Fourth Proportional to 631.07, 871.00 and 365.56

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Solution

The fourth proportional to 631.07, 871.00 and 365.56 is: 504.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.07 : 871.00 = 365.56 : x
  2. Step 2: Convert to fraction form
    631.07/871.00 = 365.56/x
  3. Step 3: Cross multiply
    631.07x = 871.00 × 365.56
  4. Step 4: Simplify right side
    631.07x = 318,400.09
  5. Step 5: Solve for x
    x = 318,400.09/631.07
  6. Step 6: Final answer
    x = 504.54

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1.5x scale

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.