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Finding the Fourth Proportional to 614.81, 846.95 and 457.17

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Solution

The fourth proportional to 614.81, 846.95 and 457.17 is: 629.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.81 : 846.95 = 457.17 : x
  2. Step 2: Convert to fraction form
    614.81/846.95 = 457.17/x
  3. Step 3: Cross multiply
    614.81x = 846.95 × 457.17
  4. Step 4: Simplify right side
    614.81x = 387,198.99
  5. Step 5: Solve for x
    x = 387,198.99/614.81
  6. Step 6: Final answer
    x = 629.79

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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.