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Finding the Fourth Proportional to 1,118.05, 1,677.32 and 468.45

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Solution

The fourth proportional to 1,118.05, 1,677.32 and 468.45 is: 702.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.05 : 1,677.32 = 468.45 : x
  2. Step 2: Convert to fraction form
    1,118.05/1,677.32 = 468.45/x
  3. Step 3: Cross multiply
    1,118.05x = 1,677.32 × 468.45
  4. Step 4: Simplify right side
    1,118.05x = 785,740.55
  5. Step 5: Solve for x
    x = 785,740.55/1,118.05
  6. Step 6: Final answer
    x = 702.78

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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.