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Finding the Fourth Proportional to 469.20, 703.66 and 238.36

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Solution

The fourth proportional to 469.20, 703.66 and 238.36 is: 357.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.20 : 703.66 = 238.36 : x
  2. Step 2: Convert to fraction form
    469.20/703.66 = 238.36/x
  3. Step 3: Cross multiply
    469.20x = 703.66 × 238.36
  4. Step 4: Simplify right side
    469.20x = 167,724.40
  5. Step 5: Solve for x
    x = 167,724.40/469.20
  6. Step 6: Final answer
    x = 357.47

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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.