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Finding the Fourth Proportional to 474.31, 710.52 and 311.50

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Solution

The fourth proportional to 474.31, 710.52 and 311.50 is: 466.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.31 : 710.52 = 311.50 : x
  2. Step 2: Convert to fraction form
    474.31/710.52 = 311.50/x
  3. Step 3: Cross multiply
    474.31x = 710.52 × 311.50
  4. Step 4: Simplify right side
    474.31x = 221,326.98
  5. Step 5: Solve for x
    x = 221,326.98/474.31
  6. Step 6: Final answer
    x = 466.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.