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Finding the Fourth Proportional to 355.08, 528.37 and 353.87

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Solution

The fourth proportional to 355.08, 528.37 and 353.87 is: 526.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.08 : 528.37 = 353.87 : x
  2. Step 2: Convert to fraction form
    355.08/528.37 = 353.87/x
  3. Step 3: Cross multiply
    355.08x = 528.37 × 353.87
  4. Step 4: Simplify right side
    355.08x = 186,974.74
  5. Step 5: Solve for x
    x = 186,974.74/355.08
  6. Step 6: Final answer
    x = 526.57

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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.