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Finding the Fourth Proportional to 266.65, 367.98 and 153.10

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Solution

The fourth proportional to 266.65, 367.98 and 153.10 is: 211.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.65 : 367.98 = 153.10 : x
  2. Step 2: Convert to fraction form
    266.65/367.98 = 153.10/x
  3. Step 3: Cross multiply
    266.65x = 367.98 × 153.10
  4. Step 4: Simplify right side
    266.65x = 56,337.74
  5. Step 5: Solve for x
    x = 56,337.74/266.65
  6. Step 6: Final answer
    x = 211.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.