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Finding the Fourth Proportional to 710.50, 1,066.05 and 480.26

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Solution

The fourth proportional to 710.50, 1,066.05 and 480.26 is: 720.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.50 : 1,066.05 = 480.26 : x
  2. Step 2: Convert to fraction form
    710.50/1,066.05 = 480.26/x
  3. Step 3: Cross multiply
    710.50x = 1,066.05 × 480.26
  4. Step 4: Simplify right side
    710.50x = 511,975.84
  5. Step 5: Solve for x
    x = 511,975.84/710.50
  6. Step 6: Final answer
    x = 720.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.