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Finding the Fourth Proportional to 676.10, 933.70 and 427.50

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Solution

The fourth proportional to 676.10, 933.70 and 427.50 is: 590.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.10 : 933.70 = 427.50 : x
  2. Step 2: Convert to fraction form
    676.10/933.70 = 427.50/x
  3. Step 3: Cross multiply
    676.10x = 933.70 × 427.50
  4. Step 4: Simplify right side
    676.10x = 399,156.75
  5. Step 5: Solve for x
    x = 399,156.75/676.10
  6. Step 6: Final answer
    x = 590.38

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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.