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Finding the Fourth Proportional to 307.81, 424.80 and 183.49

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Solution

The fourth proportional to 307.81, 424.80 and 183.49 is: 253.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.81 : 424.80 = 183.49 : x
  2. Step 2: Convert to fraction form
    307.81/424.80 = 183.49/x
  3. Step 3: Cross multiply
    307.81x = 424.80 × 183.49
  4. Step 4: Simplify right side
    307.81x = 77,946.55
  5. Step 5: Solve for x
    x = 77,946.55/307.81
  6. Step 6: Final answer
    x = 253.23

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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.