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Finding the Fourth Proportional to 644.02, 888.73 and 368.02

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Solution

The fourth proportional to 644.02, 888.73 and 368.02 is: 507.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.02 : 888.73 = 368.02 : x
  2. Step 2: Convert to fraction form
    644.02/888.73 = 368.02/x
  3. Step 3: Cross multiply
    644.02x = 888.73 × 368.02
  4. Step 4: Simplify right side
    644.02x = 327,070.41
  5. Step 5: Solve for x
    x = 327,070.41/644.02
  6. Step 6: Final answer
    x = 507.86

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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.