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Finding the Fourth Proportional to 456.64, 688.05 and 377.26

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Solution

The fourth proportional to 456.64, 688.05 and 377.26 is: 568.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.64 : 688.05 = 377.26 : x
  2. Step 2: Convert to fraction form
    456.64/688.05 = 377.26/x
  3. Step 3: Cross multiply
    456.64x = 688.05 × 377.26
  4. Step 4: Simplify right side
    456.64x = 259,571.86
  5. Step 5: Solve for x
    x = 259,571.86/456.64
  6. Step 6: Final answer
    x = 568.44

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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.