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Finding the Fourth Proportional to 899.58, 1,242 and 650.52

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Solution

The fourth proportional to 899.58, 1,242 and 650.52 is: 898.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.58 : 1,242 = 650.52 : x
  2. Step 2: Convert to fraction form
    899.58/1,242 = 650.52/x
  3. Step 3: Cross multiply
    899.58x = 1,242 × 650.52
  4. Step 4: Simplify right side
    899.58x = 807,945.84
  5. Step 5: Solve for x
    x = 807,945.84/899.58
  6. Step 6: Final answer
    x = 898.14

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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.