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Finding the Fourth Proportional to 251.16, 346.67 and 153.02

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Solution

The fourth proportional to 251.16, 346.67 and 153.02 is: 211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.16 : 346.67 = 153.02 : x
  2. Step 2: Convert to fraction form
    251.16/346.67 = 153.02/x
  3. Step 3: Cross multiply
    251.16x = 346.67 × 153.02
  4. Step 4: Simplify right side
    251.16x = 53,044.94
  5. Step 5: Solve for x
    x = 53,044.94/251.16
  6. Step 6: Final answer
    x = 211.20

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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.