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Finding the Fourth Proportional to 469.79, 704.79 and 238.67

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Solution

The fourth proportional to 469.79, 704.79 and 238.67 is: 358.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.79 : 704.79 = 238.67 : x
  2. Step 2: Convert to fraction form
    469.79/704.79 = 238.67/x
  3. Step 3: Cross multiply
    469.79x = 704.79 × 238.67
  4. Step 4: Simplify right side
    469.79x = 168,208.71
  5. Step 5: Solve for x
    x = 168,208.71/469.79
  6. Step 6: Final answer
    x = 358.05

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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.