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Finding the Fourth Proportional to 307.50, 424.34 and 183.16

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Solution

The fourth proportional to 307.50, 424.34 and 183.16 is: 252.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.50 : 424.34 = 183.16 : x
  2. Step 2: Convert to fraction form
    307.50/424.34 = 183.16/x
  3. Step 3: Cross multiply
    307.50x = 424.34 × 183.16
  4. Step 4: Simplify right side
    307.50x = 77,722.42
  5. Step 5: Solve for x
    x = 77,722.42/307.50
  6. Step 6: Final answer
    x = 252.76

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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.