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Finding the Fourth Proportional to 610.64, 915.85 and 177.69

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Solution

The fourth proportional to 610.64, 915.85 and 177.69 is: 266.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.64 : 915.85 = 177.69 : x
  2. Step 2: Convert to fraction form
    610.64/915.85 = 177.69/x
  3. Step 3: Cross multiply
    610.64x = 915.85 × 177.69
  4. Step 4: Simplify right side
    610.64x = 162,736.50
  5. Step 5: Solve for x
    x = 162,736.50/610.64
  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.