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Finding the Fourth Proportional to 355.36, 529.13 and 354.28

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Solution

The fourth proportional to 355.36, 529.13 and 354.28 is: 527.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.36 : 529.13 = 354.28 : x
  2. Step 2: Convert to fraction form
    355.36/529.13 = 354.28/x
  3. Step 3: Cross multiply
    355.36x = 529.13 × 354.28
  4. Step 4: Simplify right side
    355.36x = 187,460.18
  5. Step 5: Solve for x
    x = 187,460.18/355.36
  6. Step 6: Final answer
    x = 527.52

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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.