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Finding the Fourth Proportional to 657.54, 907.43 and 377.79

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Solution

The fourth proportional to 657.54, 907.43 and 377.79 is: 521.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.54 : 907.43 = 377.79 : x
  2. Step 2: Convert to fraction form
    657.54/907.43 = 377.79/x
  3. Step 3: Cross multiply
    657.54x = 907.43 × 377.79
  4. Step 4: Simplify right side
    657.54x = 342,814.39
  5. Step 5: Solve for x
    x = 342,814.39/657.54
  6. Step 6: Final answer
    x = 521.36

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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.