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Finding the Fourth Proportional to 615.68, 917.56 and 610.56

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Solution

The fourth proportional to 615.68, 917.56 and 610.56 is: 909.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.68 : 917.56 = 610.56 : x
  2. Step 2: Convert to fraction form
    615.68/917.56 = 610.56/x
  3. Step 3: Cross multiply
    615.68x = 917.56 × 610.56
  4. Step 4: Simplify right side
    615.68x = 560,225.43
  5. Step 5: Solve for x
    x = 560,225.43/615.68
  6. Step 6: Final answer
    x = 909.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.