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Finding the Fourth Proportional to 307.57, 424.43 and 176.57

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Solution

The fourth proportional to 307.57, 424.43 and 176.57 is: 243.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.57 : 424.43 = 176.57 : x
  2. Step 2: Convert to fraction form
    307.57/424.43 = 176.57/x
  3. Step 3: Cross multiply
    307.57x = 424.43 × 176.57
  4. Step 4: Simplify right side
    307.57x = 74,939.48
  5. Step 5: Solve for x
    x = 74,939.48/307.57
  6. Step 6: Final answer
    x = 243.65

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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.