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Finding the Fourth Proportional to 719.03, 1,072.30 and 627

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Solution

The fourth proportional to 719.03, 1,072.30 and 627 is: 935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.03 : 1,072.30 = 627 : x
  2. Step 2: Convert to fraction form
    719.03/1,072.30 = 627/x
  3. Step 3: Cross multiply
    719.03x = 1,072.30 × 627
  4. Step 4: Simplify right side
    719.03x = 672,332.10
  5. Step 5: Solve for x
    x = 672,332.10/719.03
  6. Step 6: Final answer
    x = 935.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.