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Finding the Fourth Proportional to 1,137.68, 1,706.55 and 444.32

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Solution

The fourth proportional to 1,137.68, 1,706.55 and 444.32 is: 666.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.68 : 1,706.55 = 444.32 : x
  2. Step 2: Convert to fraction form
    1,137.68/1,706.55 = 444.32/x
  3. Step 3: Cross multiply
    1,137.68x = 1,706.55 × 444.32
  4. Step 4: Simplify right side
    1,137.68x = 758,254.30
  5. Step 5: Solve for x
    x = 758,254.30/1,137.68
  6. Step 6: Final answer
    x = 666.49

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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.