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Finding the Fourth Proportional to 347.04, 476.88 and 313.44

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Solution

The fourth proportional to 347.04, 476.88 and 313.44 is: 430.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.04 : 476.88 = 313.44 : x
  2. Step 2: Convert to fraction form
    347.04/476.88 = 313.44/x
  3. Step 3: Cross multiply
    347.04x = 476.88 × 313.44
  4. Step 4: Simplify right side
    347.04x = 149,473.27
  5. Step 5: Solve for x
    x = 149,473.27/347.04
  6. Step 6: Final answer
    x = 430.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.