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Finding the Fourth Proportional to 615.01, 921.74 and 608.50

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Solution

The fourth proportional to 615.01, 921.74 and 608.50 is: 911.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.01 : 921.74 = 608.50 : x
  2. Step 2: Convert to fraction form
    615.01/921.74 = 608.50/x
  3. Step 3: Cross multiply
    615.01x = 921.74 × 608.50
  4. Step 4: Simplify right side
    615.01x = 560,875.75
  5. Step 5: Solve for x
    x = 560,875.75/615.01
  6. Step 6: Final answer
    x = 911.98

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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.