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Finding the Fourth Proportional to 355.58, 529.39 and 353.87

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Solution

The fourth proportional to 355.58, 529.39 and 353.87 is: 526.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.58 : 529.39 = 353.87 : x
  2. Step 2: Convert to fraction form
    355.58/529.39 = 353.87/x
  3. Step 3: Cross multiply
    355.58x = 529.39 × 353.87
  4. Step 4: Simplify right side
    355.58x = 187,335.24
  5. Step 5: Solve for x
    x = 187,335.24/355.58
  6. Step 6: Final answer
    x = 526.84

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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.