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Finding the Fourth Proportional to 899.07, 1,240.72 and 526.37

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Solution

The fourth proportional to 899.07, 1,240.72 and 526.37 is: 726.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.07 : 1,240.72 = 526.37 : x
  2. Step 2: Convert to fraction form
    899.07/1,240.72 = 526.37/x
  3. Step 3: Cross multiply
    899.07x = 1,240.72 × 526.37
  4. Step 4: Simplify right side
    899.07x = 653,072.88
  5. Step 5: Solve for x
    x = 653,072.88/899.07
  6. Step 6: Final answer
    x = 726.39

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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.