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Finding the Fourth Proportional to 710.79, 982.08 and 564.54

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Solution

The fourth proportional to 710.79, 982.08 and 564.54 is: 780.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.79 : 982.08 = 564.54 : x
  2. Step 2: Convert to fraction form
    710.79/982.08 = 564.54/x
  3. Step 3: Cross multiply
    710.79x = 982.08 × 564.54
  4. Step 4: Simplify right side
    710.79x = 554,423.44
  5. Step 5: Solve for x
    x = 554,423.44/710.79
  6. Step 6: Final answer
    x = 780.01

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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.