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Finding the Fourth Proportional to 341.32, 470.76 and 289.34

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Solution

The fourth proportional to 341.32, 470.76 and 289.34 is: 399.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.32 : 470.76 = 289.34 : x
  2. Step 2: Convert to fraction form
    341.32/470.76 = 289.34/x
  3. Step 3: Cross multiply
    341.32x = 470.76 × 289.34
  4. Step 4: Simplify right side
    341.32x = 136,209.70
  5. Step 5: Solve for x
    x = 136,209.70/341.32
  6. Step 6: Final answer
    x = 399.07

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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.