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Finding the Fourth Proportional to 499.68, 749.36 and 207.16

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Solution

The fourth proportional to 499.68, 749.36 and 207.16 is: 310.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    499.68 : 749.36 = 207.16 : x
  2. Step 2: Convert to fraction form
    499.68/749.36 = 207.16/x
  3. Step 3: Cross multiply
    499.68x = 749.36 × 207.16
  4. Step 4: Simplify right side
    499.68x = 155,237.42
  5. Step 5: Solve for x
    x = 155,237.42/499.68
  6. Step 6: Final answer
    x = 310.67

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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.