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Finding the Fourth Proportional to 656.63, 984.64 and 245.76

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Solution

The fourth proportional to 656.63, 984.64 and 245.76 is: 368.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.63 : 984.64 = 245.76 : x
  2. Step 2: Convert to fraction form
    656.63/984.64 = 245.76/x
  3. Step 3: Cross multiply
    656.63x = 984.64 × 245.76
  4. Step 4: Simplify right side
    656.63x = 241,985.13
  5. Step 5: Solve for x
    x = 241,985.13/656.63
  6. Step 6: Final answer
    x = 368.53

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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.