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Finding the Fourth Proportional to 615.81, 850.42 and 526.78

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Solution

The fourth proportional to 615.81, 850.42 and 526.78 is: 727.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.81 : 850.42 = 526.78 : x
  2. Step 2: Convert to fraction form
    615.81/850.42 = 526.78/x
  3. Step 3: Cross multiply
    615.81x = 850.42 × 526.78
  4. Step 4: Simplify right side
    615.81x = 447,980.00
  5. Step 5: Solve for x
    x = 447,980.00/615.81
  6. Step 6: Final answer
    x = 727.46

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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.