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Finding the Fourth Proportional to 647.85, 894.00 and 368.04

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Solution

The fourth proportional to 647.85, 894.00 and 368.04 is: 507.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.85 : 894.00 = 368.04 : x
  2. Step 2: Convert to fraction form
    647.85/894.00 = 368.04/x
  3. Step 3: Cross multiply
    647.85x = 894.00 × 368.04
  4. Step 4: Simplify right side
    647.85x = 329,029.73
  5. Step 5: Solve for x
    x = 329,029.73/647.85
  6. Step 6: Final answer
    x = 507.88

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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.