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Finding the Fourth Proportional to 749.73, 1,034.94 and 548.16

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Solution

The fourth proportional to 749.73, 1,034.94 and 548.16 is: 756.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.73 : 1,034.94 = 548.16 : x
  2. Step 2: Convert to fraction form
    749.73/1,034.94 = 548.16/x
  3. Step 3: Cross multiply
    749.73x = 1,034.94 × 548.16
  4. Step 4: Simplify right side
    749.73x = 567,312.71
  5. Step 5: Solve for x
    x = 567,312.71/749.73
  6. Step 6: Final answer
    x = 756.69

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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.