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Finding the Fourth Proportional to 346.04, 477.72 and 229.70

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Solution

The fourth proportional to 346.04, 477.72 and 229.70 is: 317.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.04 : 477.72 = 229.70 : x
  2. Step 2: Convert to fraction form
    346.04/477.72 = 229.70/x
  3. Step 3: Cross multiply
    346.04x = 477.72 × 229.70
  4. Step 4: Simplify right side
    346.04x = 109,732.28
  5. Step 5: Solve for x
    x = 109,732.28/346.04
  6. Step 6: Final answer
    x = 317.11

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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.