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Finding the Fourth Proportional to 417.89, 625.89 and 357.14

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Solution

The fourth proportional to 417.89, 625.89 and 357.14 is: 534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.89 : 625.89 = 357.14 : x
  2. Step 2: Convert to fraction form
    417.89/625.89 = 357.14/x
  3. Step 3: Cross multiply
    417.89x = 625.89 × 357.14
  4. Step 4: Simplify right side
    417.89x = 223,530.35
  5. Step 5: Solve for x
    x = 223,530.35/417.89
  6. Step 6: Final answer
    x = 534.90

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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.