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Finding the Fourth Proportional to 637.34, 876.98 and 618.34

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Solution

The fourth proportional to 637.34, 876.98 and 618.34 is: 850.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.34 : 876.98 = 618.34 : x
  2. Step 2: Convert to fraction form
    637.34/876.98 = 618.34/x
  3. Step 3: Cross multiply
    637.34x = 876.98 × 618.34
  4. Step 4: Simplify right side
    637.34x = 542,271.81
  5. Step 5: Solve for x
    x = 542,271.81/637.34
  6. Step 6: Final answer
    x = 850.84

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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.