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Finding the Fourth Proportional to 349.38, 526.19 and 315.54

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Solution

The fourth proportional to 349.38, 526.19 and 315.54 is: 475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.38 : 526.19 = 315.54 : x
  2. Step 2: Convert to fraction form
    349.38/526.19 = 315.54/x
  3. Step 3: Cross multiply
    349.38x = 526.19 × 315.54
  4. Step 4: Simplify right side
    349.38x = 166,032.41
  5. Step 5: Solve for x
    x = 166,032.41/349.38
  6. Step 6: Final answer
    x = 475.22

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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.