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Finding the Fourth Proportional to 348.96, 524.88 and 315.84

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Solution

The fourth proportional to 348.96, 524.88 and 315.84 is: 475.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.96 : 524.88 = 315.84 : x
  2. Step 2: Convert to fraction form
    348.96/524.88 = 315.84/x
  3. Step 3: Cross multiply
    348.96x = 524.88 × 315.84
  4. Step 4: Simplify right side
    348.96x = 165,778.10
  5. Step 5: Solve for x
    x = 165,778.10/348.96
  6. Step 6: Final answer
    x = 475.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.