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Finding the Fourth Proportional to 354.44, 528.70 and 310.70

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Solution

The fourth proportional to 354.44, 528.70 and 310.70 is: 463.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.44 : 528.70 = 310.70 : x
  2. Step 2: Convert to fraction form
    354.44/528.70 = 310.70/x
  3. Step 3: Cross multiply
    354.44x = 528.70 × 310.70
  4. Step 4: Simplify right side
    354.44x = 164,267.09
  5. Step 5: Solve for x
    x = 164,267.09/354.44
  6. Step 6: Final answer
    x = 463.46

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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.