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Finding the Fourth Proportional to 477.90, 713.03 and 425.93

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Solution

The fourth proportional to 477.90, 713.03 and 425.93 is: 635.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.90 : 713.03 = 425.93 : x
  2. Step 2: Convert to fraction form
    477.90/713.03 = 425.93/x
  3. Step 3: Cross multiply
    477.90x = 713.03 × 425.93
  4. Step 4: Simplify right side
    477.90x = 303,695.17
  5. Step 5: Solve for x
    x = 303,695.17/477.90
  6. Step 6: Final answer
    x = 635.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.