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Finding the Fourth Proportional to 426.48, 587.97 and 402.63

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Solution

The fourth proportional to 426.48, 587.97 and 402.63 is: 555.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.48 : 587.97 = 402.63 : x
  2. Step 2: Convert to fraction form
    426.48/587.97 = 402.63/x
  3. Step 3: Cross multiply
    426.48x = 587.97 × 402.63
  4. Step 4: Simplify right side
    426.48x = 236,734.36
  5. Step 5: Solve for x
    x = 236,734.36/426.48
  6. Step 6: Final answer
    x = 555.09

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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.