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Finding the Fourth Proportional to 719.52, 994.17 and 555.15

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Solution

The fourth proportional to 719.52, 994.17 and 555.15 is: 767.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.52 : 994.17 = 555.15 : x
  2. Step 2: Convert to fraction form
    719.52/994.17 = 555.15/x
  3. Step 3: Cross multiply
    719.52x = 994.17 × 555.15
  4. Step 4: Simplify right side
    719.52x = 551,908.50
  5. Step 5: Solve for x
    x = 551,908.50/719.52
  6. Step 6: Final answer
    x = 767.05

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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.