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Finding the Fourth Proportional to 1,392.44, 2,087.06 and 525.88

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Solution

The fourth proportional to 1,392.44, 2,087.06 and 525.88 is: 788.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.44 : 2,087.06 = 525.88 : x
  2. Step 2: Convert to fraction form
    1,392.44/2,087.06 = 525.88/x
  3. Step 3: Cross multiply
    1,392.44x = 2,087.06 × 525.88
  4. Step 4: Simplify right side
    1,392.44x = 1,097,543.11
  5. Step 5: Solve for x
    x = 1,097,543.11/1,392.44
  6. Step 6: Final answer
    x = 788.22

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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.