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Finding the Fourth Proportional to 354.48, 530.73 and 238.65

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Solution

The fourth proportional to 354.48, 530.73 and 238.65 is: 357.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.48 : 530.73 = 238.65 : x
  2. Step 2: Convert to fraction form
    354.48/530.73 = 238.65/x
  3. Step 3: Cross multiply
    354.48x = 530.73 × 238.65
  4. Step 4: Simplify right side
    354.48x = 126,658.71
  5. Step 5: Solve for x
    x = 126,658.71/354.48
  6. Step 6: Final answer
    x = 357.31

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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.