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Finding the Fourth Proportional to 710.67, 1,066.25 and 277.59

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Solution

The fourth proportional to 710.67, 1,066.25 and 277.59 is: 416.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.67 : 1,066.25 = 277.59 : x
  2. Step 2: Convert to fraction form
    710.67/1,066.25 = 277.59/x
  3. Step 3: Cross multiply
    710.67x = 1,066.25 × 277.59
  4. Step 4: Simplify right side
    710.67x = 295,978.95
  5. Step 5: Solve for x
    x = 295,978.95/710.67
  6. Step 6: Final answer
    x = 416.48

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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.