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Finding the Fourth Proportional to 668.34, 924.89 and 627.44

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Solution

The fourth proportional to 668.34, 924.89 and 627.44 is: 868.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    668.34 : 924.89 = 627.44 : x
  2. Step 2: Convert to fraction form
    668.34/924.89 = 627.44/x
  3. Step 3: Cross multiply
    668.34x = 924.89 × 627.44
  4. Step 4: Simplify right side
    668.34x = 580,305.22
  5. Step 5: Solve for x
    x = 580,305.22/668.34
  6. Step 6: Final answer
    x = 868.28

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1.5x scale

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.