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Finding the Fourth Proportional to 341.30, 471.09 and 307.70

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Solution

The fourth proportional to 341.30, 471.09 and 307.70 is: 424.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.30 : 471.09 = 307.70 : x
  2. Step 2: Convert to fraction form
    341.30/471.09 = 307.70/x
  3. Step 3: Cross multiply
    341.30x = 471.09 × 307.70
  4. Step 4: Simplify right side
    341.30x = 144,954.39
  5. Step 5: Solve for x
    x = 144,954.39/341.30
  6. Step 6: Final answer
    x = 424.71

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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.