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Finding the Fourth Proportional to 426.03, 637.56 and 397.68

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Solution

The fourth proportional to 426.03, 637.56 and 397.68 is: 595.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.03 : 637.56 = 397.68 : x
  2. Step 2: Convert to fraction form
    426.03/637.56 = 397.68/x
  3. Step 3: Cross multiply
    426.03x = 637.56 × 397.68
  4. Step 4: Simplify right side
    426.03x = 253,544.86
  5. Step 5: Solve for x
    x = 253,544.86/426.03
  6. Step 6: Final answer
    x = 595.13

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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.