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Finding the Fourth Proportional to 718.12, 986.87 and 562.60

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Solution

The fourth proportional to 718.12, 986.87 and 562.60 is: 773.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.12 : 986.87 = 562.60 : x
  2. Step 2: Convert to fraction form
    718.12/986.87 = 562.60/x
  3. Step 3: Cross multiply
    718.12x = 986.87 × 562.60
  4. Step 4: Simplify right side
    718.12x = 555,213.06
  5. Step 5: Solve for x
    x = 555,213.06/718.12
  6. Step 6: Final answer
    x = 773.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.