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Finding the Fourth Proportional to 637.58, 956.21 and 432.09

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Solution

The fourth proportional to 637.58, 956.21 and 432.09 is: 648.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.58 : 956.21 = 432.09 : x
  2. Step 2: Convert to fraction form
    637.58/956.21 = 432.09/x
  3. Step 3: Cross multiply
    637.58x = 956.21 × 432.09
  4. Step 4: Simplify right side
    637.58x = 413,166.62
  5. Step 5: Solve for x
    x = 413,166.62/637.58
  6. Step 6: Final answer
    x = 648.03

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1.5x scale

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.