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Finding the Fourth Proportional to 266.65, 397.62 and 248.15

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Solution

The fourth proportional to 266.65, 397.62 and 248.15 is: 370.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.65 : 397.62 = 248.15 : x
  2. Step 2: Convert to fraction form
    266.65/397.62 = 248.15/x
  3. Step 3: Cross multiply
    266.65x = 397.62 × 248.15
  4. Step 4: Simplify right side
    266.65x = 98,670.40
  5. Step 5: Solve for x
    x = 98,670.40/266.65
  6. Step 6: Final answer
    x = 370.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.