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Finding the Fourth Proportional to 417.84, 626.91 and 201.45

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Solution

The fourth proportional to 417.84, 626.91 and 201.45 is: 302.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.84 : 626.91 = 201.45 : x
  2. Step 2: Convert to fraction form
    417.84/626.91 = 201.45/x
  3. Step 3: Cross multiply
    417.84x = 626.91 × 201.45
  4. Step 4: Simplify right side
    417.84x = 126,291.02
  5. Step 5: Solve for x
    x = 126,291.02/417.84
  6. Step 6: Final answer
    x = 302.25

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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.