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Finding the Fourth Proportional to 474.51, 711.28 and 301.31

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Solution

The fourth proportional to 474.51, 711.28 and 301.31 is: 451.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.51 : 711.28 = 301.31 : x
  2. Step 2: Convert to fraction form
    474.51/711.28 = 301.31/x
  3. Step 3: Cross multiply
    474.51x = 711.28 × 301.31
  4. Step 4: Simplify right side
    474.51x = 214,311.47
  5. Step 5: Solve for x
    x = 214,311.47/474.51
  6. Step 6: Final answer
    x = 451.65

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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.