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Finding the Fourth Proportional to 354.98, 529.29 and 348.50

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Solution

The fourth proportional to 354.98, 529.29 and 348.50 is: 519.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.98 : 529.29 = 348.50 : x
  2. Step 2: Convert to fraction form
    354.98/529.29 = 348.50/x
  3. Step 3: Cross multiply
    354.98x = 529.29 × 348.50
  4. Step 4: Simplify right side
    354.98x = 184,455.82
  5. Step 5: Solve for x
    x = 184,455.82/354.98
  6. Step 6: Final answer
    x = 519.62

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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.