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Finding the Fourth Proportional to 357.19, 493.23 and 275.11

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Solution

The fourth proportional to 357.19, 493.23 and 275.11 is: 379.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.19 : 493.23 = 275.11 : x
  2. Step 2: Convert to fraction form
    357.19/493.23 = 275.11/x
  3. Step 3: Cross multiply
    357.19x = 493.23 × 275.11
  4. Step 4: Simplify right side
    357.19x = 135,692.51
  5. Step 5: Solve for x
    x = 135,692.51/357.19
  6. Step 6: Final answer
    x = 379.89

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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.