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Finding the Fourth Proportional to 1,083.01, 1,495.02 and 640.93

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Solution

The fourth proportional to 1,083.01, 1,495.02 and 640.93 is: 884.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,083.01 : 1,495.02 = 640.93 : x
  2. Step 2: Convert to fraction form
    1,083.01/1,495.02 = 640.93/x
  3. Step 3: Cross multiply
    1,083.01x = 1,495.02 × 640.93
  4. Step 4: Simplify right side
    1,083.01x = 958,203.17
  5. Step 5: Solve for x
    x = 958,203.17/1,083.01
  6. Step 6: Final answer
    x = 884.76

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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.