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Finding the Fourth Proportional to 1,084.02, 1,495.87 and 611.77

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Solution

The fourth proportional to 1,084.02, 1,495.87 and 611.77 is: 844.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.02 : 1,495.87 = 611.77 : x
  2. Step 2: Convert to fraction form
    1,084.02/1,495.87 = 611.77/x
  3. Step 3: Cross multiply
    1,084.02x = 1,495.87 × 611.77
  4. Step 4: Simplify right side
    1,084.02x = 915,128.39
  5. Step 5: Solve for x
    x = 915,128.39/1,084.02
  6. Step 6: Final answer
    x = 844.20

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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.