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Finding the Fourth Proportional to 477.43, 655.36 and 440.51

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Solution

The fourth proportional to 477.43, 655.36 and 440.51 is: 604.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.43 : 655.36 = 440.51 : x
  2. Step 2: Convert to fraction form
    477.43/655.36 = 440.51/x
  3. Step 3: Cross multiply
    477.43x = 655.36 × 440.51
  4. Step 4: Simplify right side
    477.43x = 288,688.26
  5. Step 5: Solve for x
    x = 288,688.26/477.43
  6. Step 6: Final answer
    x = 604.67

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.