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Finding the Fourth Proportional to 710.36, 980.15 and 411.54

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Solution

The fourth proportional to 710.36, 980.15 and 411.54 is: 567.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.36 : 980.15 = 411.54 : x
  2. Step 2: Convert to fraction form
    710.36/980.15 = 411.54/x
  3. Step 3: Cross multiply
    710.36x = 980.15 × 411.54
  4. Step 4: Simplify right side
    710.36x = 403,368.87
  5. Step 5: Solve for x
    x = 403,368.87/710.36
  6. Step 6: Final answer
    x = 567.84

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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.