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Finding the Fourth Proportional to 675.95, 932.96 and 427.60

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Solution

The fourth proportional to 675.95, 932.96 and 427.60 is: 590.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.95 : 932.96 = 427.60 : x
  2. Step 2: Convert to fraction form
    675.95/932.96 = 427.60/x
  3. Step 3: Cross multiply
    675.95x = 932.96 × 427.60
  4. Step 4: Simplify right side
    675.95x = 398,926.89
  5. Step 5: Solve for x
    x = 398,926.89/675.95
  6. Step 6: Final answer
    x = 590.17

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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.