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Finding the Fourth Proportional to 477.62, 657.33 and 419.30

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Solution

The fourth proportional to 477.62, 657.33 and 419.30 is: 577.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.62 : 657.33 = 419.30 : x
  2. Step 2: Convert to fraction form
    477.62/657.33 = 419.30/x
  3. Step 3: Cross multiply
    477.62x = 657.33 × 419.30
  4. Step 4: Simplify right side
    477.62x = 275,618.47
  5. Step 5: Solve for x
    x = 275,618.47/477.62
  6. Step 6: Final answer
    x = 577.07

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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.