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Finding the Fourth Proportional to 307.28, 424.10 and 176.26

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Solution

The fourth proportional to 307.28, 424.10 and 176.26 is: 243.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.28 : 424.10 = 176.26 : x
  2. Step 2: Convert to fraction form
    307.28/424.10 = 176.26/x
  3. Step 3: Cross multiply
    307.28x = 424.10 × 176.26
  4. Step 4: Simplify right side
    307.28x = 74,751.87
  5. Step 5: Solve for x
    x = 74,751.87/307.28
  6. Step 6: Final answer
    x = 243.27

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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.