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Finding the Fourth Proportional to 542.35, 812.50 and 268.12

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Solution

The fourth proportional to 542.35, 812.50 and 268.12 is: 401.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.35 : 812.50 = 268.12 : x
  2. Step 2: Convert to fraction form
    542.35/812.50 = 268.12/x
  3. Step 3: Cross multiply
    542.35x = 812.50 × 268.12
  4. Step 4: Simplify right side
    542.35x = 217,847.50
  5. Step 5: Solve for x
    x = 217,847.50/542.35
  6. Step 6: Final answer
    x = 401.67

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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.