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Finding the Fourth Proportional to 710.90, 982.29 and 581.30

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Solution

The fourth proportional to 710.90, 982.29 and 581.30 is: 803.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.90 : 982.29 = 581.30 : x
  2. Step 2: Convert to fraction form
    710.90/982.29 = 581.30/x
  3. Step 3: Cross multiply
    710.90x = 982.29 × 581.30
  4. Step 4: Simplify right side
    710.90x = 571,005.18
  5. Step 5: Solve for x
    x = 571,005.18/710.90
  6. Step 6: Final answer
    x = 803.21

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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.