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Finding the Fourth Proportional to 637.32, 955.47 and 406.32

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Solution

The fourth proportional to 637.32, 955.47 and 406.32 is: 609.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.32 : 955.47 = 406.32 : x
  2. Step 2: Convert to fraction form
    637.32/955.47 = 406.32/x
  3. Step 3: Cross multiply
    637.32x = 955.47 × 406.32
  4. Step 4: Simplify right side
    637.32x = 388,226.57
  5. Step 5: Solve for x
    x = 388,226.57/637.32
  6. Step 6: Final answer
    x = 609.15

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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.