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Finding the Fourth Proportional to 942.53, 1,299.86 and 610.63

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Solution

The fourth proportional to 942.53, 1,299.86 and 610.63 is: 842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.53 : 1,299.86 = 610.63 : x
  2. Step 2: Convert to fraction form
    942.53/1,299.86 = 610.63/x
  3. Step 3: Cross multiply
    942.53x = 1,299.86 × 610.63
  4. Step 4: Simplify right side
    942.53x = 793,733.51
  5. Step 5: Solve for x
    x = 793,733.51/942.53
  6. Step 6: Final answer
    x = 842.13

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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.