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Finding the Fourth Proportional to 610.68, 916.49 and 245.70

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Solution

The fourth proportional to 610.68, 916.49 and 245.70 is: 368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.68 : 916.49 = 245.70 : x
  2. Step 2: Convert to fraction form
    610.68/916.49 = 245.70/x
  3. Step 3: Cross multiply
    610.68x = 916.49 × 245.70
  4. Step 4: Simplify right side
    610.68x = 225,181.59
  5. Step 5: Solve for x
    x = 225,181.59/610.68
  6. Step 6: Final answer
    x = 368.74

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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.