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Finding the Fourth Proportional to 1,077.93, 1,617.17 and 347.49

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Solution

The fourth proportional to 1,077.93, 1,617.17 and 347.49 is: 521.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.93 : 1,617.17 = 347.49 : x
  2. Step 2: Convert to fraction form
    1,077.93/1,617.17 = 347.49/x
  3. Step 3: Cross multiply
    1,077.93x = 1,617.17 × 347.49
  4. Step 4: Simplify right side
    1,077.93x = 561,948.67
  5. Step 5: Solve for x
    x = 561,948.67/1,077.93
  6. Step 6: Final answer
    x = 521.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.