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Finding the Fourth Proportional to 307.83, 424.80 and 183.47

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Solution

The fourth proportional to 307.83, 424.80 and 183.47 is: 253.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.83 : 424.80 = 183.47 : x
  2. Step 2: Convert to fraction form
    307.83/424.80 = 183.47/x
  3. Step 3: Cross multiply
    307.83x = 424.80 × 183.47
  4. Step 4: Simplify right side
    307.83x = 77,936.62
  5. Step 5: Solve for x
    x = 77,936.62/307.83
  6. Step 6: Final answer
    x = 253.18

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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.