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Finding the Fourth Proportional to 631.06, 945.02 and 356.86

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Solution

The fourth proportional to 631.06, 945.02 and 356.86 is: 534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.06 : 945.02 = 356.86 : x
  2. Step 2: Convert to fraction form
    631.06/945.02 = 356.86/x
  3. Step 3: Cross multiply
    631.06x = 945.02 × 356.86
  4. Step 4: Simplify right side
    631.06x = 337,239.84
  5. Step 5: Solve for x
    x = 337,239.84/631.06
  6. Step 6: Final answer
    x = 534.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.