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Finding the Fourth Proportional to 307.89, 424.96 and 183.62

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Solution

The fourth proportional to 307.89, 424.96 and 183.62 is: 253.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.89 : 424.96 = 183.62 : x
  2. Step 2: Convert to fraction form
    307.89/424.96 = 183.62/x
  3. Step 3: Cross multiply
    307.89x = 424.96 × 183.62
  4. Step 4: Simplify right side
    307.89x = 78,031.76
  5. Step 5: Solve for x
    x = 78,031.76/307.89
  6. Step 6: Final answer
    x = 253.44

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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.