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Finding the Fourth Proportional to 656.88, 986.36 and 368.52

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Solution

The fourth proportional to 656.88, 986.36 and 368.52 is: 553.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.88 : 986.36 = 368.52 : x
  2. Step 2: Convert to fraction form
    656.88/986.36 = 368.52/x
  3. Step 3: Cross multiply
    656.88x = 986.36 × 368.52
  4. Step 4: Simplify right side
    656.88x = 363,493.39
  5. Step 5: Solve for x
    x = 363,493.39/656.88
  6. Step 6: Final answer
    x = 553.36

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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.