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Finding the Fourth Proportional to 619.56, 855.90 and 526.14

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Solution

The fourth proportional to 619.56, 855.90 and 526.14 is: 726.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.56 : 855.90 = 526.14 : x
  2. Step 2: Convert to fraction form
    619.56/855.90 = 526.14/x
  3. Step 3: Cross multiply
    619.56x = 855.90 × 526.14
  4. Step 4: Simplify right side
    619.56x = 450,323.23
  5. Step 5: Solve for x
    x = 450,323.23/619.56
  6. Step 6: Final answer
    x = 726.84

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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.