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Finding the Fourth Proportional to 944.37, 1,415.64 and 457.14

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Solution

The fourth proportional to 944.37, 1,415.64 and 457.14 is: 685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.37 : 1,415.64 = 457.14 : x
  2. Step 2: Convert to fraction form
    944.37/1,415.64 = 457.14/x
  3. Step 3: Cross multiply
    944.37x = 1,415.64 × 457.14
  4. Step 4: Simplify right side
    944.37x = 647,145.67
  5. Step 5: Solve for x
    x = 647,145.67/944.37
  6. Step 6: Final answer
    x = 685.27

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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.