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Finding the Fourth Proportional to 610.63, 915.79 and 177.70

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Solution

The fourth proportional to 610.63, 915.79 and 177.70 is: 266.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.63 : 915.79 = 177.70 : x
  2. Step 2: Convert to fraction form
    610.63/915.79 = 177.70/x
  3. Step 3: Cross multiply
    610.63x = 915.79 × 177.70
  4. Step 4: Simplify right side
    610.63x = 162,735.88
  5. Step 5: Solve for x
    x = 162,735.88/610.63
  6. Step 6: Final answer
    x = 266.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.