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Finding the Fourth Proportional to 357.68, 535.80 and 235.76

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Solution

The fourth proportional to 357.68, 535.80 and 235.76 is: 353.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.68 : 535.80 = 235.76 : x
  2. Step 2: Convert to fraction form
    357.68/535.80 = 235.76/x
  3. Step 3: Cross multiply
    357.68x = 535.80 × 235.76
  4. Step 4: Simplify right side
    357.68x = 126,320.21
  5. Step 5: Solve for x
    x = 126,320.21/357.68
  6. Step 6: Final answer
    x = 353.17

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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.