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Finding the Fourth Proportional to 355.16, 535 and 351.92

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Solution

The fourth proportional to 355.16, 535 and 351.92 is: 530.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.16 : 535 = 351.92 : x
  2. Step 2: Convert to fraction form
    355.16/535 = 351.92/x
  3. Step 3: Cross multiply
    355.16x = 535 × 351.92
  4. Step 4: Simplify right side
    355.16x = 188,277.20
  5. Step 5: Solve for x
    x = 188,277.20/355.16
  6. Step 6: Final answer
    x = 530.12

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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.