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Finding the Fourth Proportional to 348.48, 525.05 and 315.58

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Solution

The fourth proportional to 348.48, 525.05 and 315.58 is: 475.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.48 : 525.05 = 315.58 : x
  2. Step 2: Convert to fraction form
    348.48/525.05 = 315.58/x
  3. Step 3: Cross multiply
    348.48x = 525.05 × 315.58
  4. Step 4: Simplify right side
    348.48x = 165,695.28
  5. Step 5: Solve for x
    x = 165,695.28/348.48
  6. Step 6: Final answer
    x = 475.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.