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Finding the Fourth Proportional to 355.31, 529.58 and 348.47

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Solution

The fourth proportional to 355.31, 529.58 and 348.47 is: 519.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.31 : 529.58 = 348.47 : x
  2. Step 2: Convert to fraction form
    355.31/529.58 = 348.47/x
  3. Step 3: Cross multiply
    355.31x = 529.58 × 348.47
  4. Step 4: Simplify right side
    355.31x = 184,543.97
  5. Step 5: Solve for x
    x = 184,543.97/355.31
  6. Step 6: Final answer
    x = 519.39

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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.