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Finding the Fourth Proportional to 710.34, 980.40 and 461.87

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Solution

The fourth proportional to 710.34, 980.40 and 461.87 is: 637.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.34 : 980.40 = 461.87 : x
  2. Step 2: Convert to fraction form
    710.34/980.40 = 461.87/x
  3. Step 3: Cross multiply
    710.34x = 980.40 × 461.87
  4. Step 4: Simplify right side
    710.34x = 452,817.85
  5. Step 5: Solve for x
    x = 452,817.85/710.34
  6. Step 6: Final answer
    x = 637.47

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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.