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Finding the Fourth Proportional to 676.69, 933.59 and 427.92

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Solution

The fourth proportional to 676.69, 933.59 and 427.92 is: 590.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.69 : 933.59 = 427.92 : x
  2. Step 2: Convert to fraction form
    676.69/933.59 = 427.92/x
  3. Step 3: Cross multiply
    676.69x = 933.59 × 427.92
  4. Step 4: Simplify right side
    676.69x = 399,501.83
  5. Step 5: Solve for x
    x = 399,501.83/676.69
  6. Step 6: Final answer
    x = 590.38

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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.