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Finding the Fourth Proportional to 356.12, 531.33 and 347.88

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Solution

The fourth proportional to 356.12, 531.33 and 347.88 is: 519.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.12 : 531.33 = 347.88 : x
  2. Step 2: Convert to fraction form
    356.12/531.33 = 347.88/x
  3. Step 3: Cross multiply
    356.12x = 531.33 × 347.88
  4. Step 4: Simplify right side
    356.12x = 184,839.08
  5. Step 5: Solve for x
    x = 184,839.08/356.12
  6. Step 6: Final answer
    x = 519.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.