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Finding the Fourth Proportional to 477.36, 717.19 and 425.52

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Solution

The fourth proportional to 477.36, 717.19 and 425.52 is: 639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.36 : 717.19 = 425.52 : x
  2. Step 2: Convert to fraction form
    477.36/717.19 = 425.52/x
  3. Step 3: Cross multiply
    477.36x = 717.19 × 425.52
  4. Step 4: Simplify right side
    477.36x = 305,177.63
  5. Step 5: Solve for x
    x = 305,177.63/477.36
  6. Step 6: Final answer
    x = 639.30

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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.