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Finding the Fourth Proportional to 716.10, 987.93 and 519.18

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Solution

The fourth proportional to 716.10, 987.93 and 519.18 is: 716.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.10 : 987.93 = 519.18 : x
  2. Step 2: Convert to fraction form
    716.10/987.93 = 519.18/x
  3. Step 3: Cross multiply
    716.10x = 987.93 × 519.18
  4. Step 4: Simplify right side
    716.10x = 512,913.50
  5. Step 5: Solve for x
    x = 512,913.50/716.10
  6. Step 6: Final answer
    x = 716.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.