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Finding the Fourth Proportional to 461.03, 688.34 and 414.95

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Solution

The fourth proportional to 461.03, 688.34 and 414.95 is: 619.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.03 : 688.34 = 414.95 : x
  2. Step 2: Convert to fraction form
    461.03/688.34 = 414.95/x
  3. Step 3: Cross multiply
    461.03x = 688.34 × 414.95
  4. Step 4: Simplify right side
    461.03x = 285,621.17
  5. Step 5: Solve for x
    x = 285,621.17/461.03
  6. Step 6: Final answer
    x = 619.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.