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Finding the Fourth Proportional to 657.34, 906.84 and 482.38

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Solution

The fourth proportional to 657.34, 906.84 and 482.38 is: 665.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.34 : 906.84 = 482.38 : x
  2. Step 2: Convert to fraction form
    657.34/906.84 = 482.38/x
  3. Step 3: Cross multiply
    657.34x = 906.84 × 482.38
  4. Step 4: Simplify right side
    657.34x = 437,441.48
  5. Step 5: Solve for x
    x = 437,441.48/657.34
  6. Step 6: Final answer
    x = 665.47

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1.5x scale

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.