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Finding the Fourth Proportional to 351.74, 529.68 and 283.40

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Solution

The fourth proportional to 351.74, 529.68 and 283.40 is: 426.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.74 : 529.68 = 283.40 : x
  2. Step 2: Convert to fraction form
    351.74/529.68 = 283.40/x
  3. Step 3: Cross multiply
    351.74x = 529.68 × 283.40
  4. Step 4: Simplify right side
    351.74x = 150,108.66
  5. Step 5: Solve for x
    x = 150,108.66/351.74
  6. Step 6: Final answer
    x = 426.77

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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.