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Finding the Fourth Proportional to 456.77, 629.42 and 351.87

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Solution

The fourth proportional to 456.77, 629.42 and 351.87 is: 484.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.77 : 629.42 = 351.87 : x
  2. Step 2: Convert to fraction form
    456.77/629.42 = 351.87/x
  3. Step 3: Cross multiply
    456.77x = 629.42 × 351.87
  4. Step 4: Simplify right side
    456.77x = 221,472.26
  5. Step 5: Solve for x
    x = 221,472.26/456.77
  6. Step 6: Final answer
    x = 484.87

Related Problems

Find fourth proportional to 228.38, 314.71 and 175.94
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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.