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Finding the Fourth Proportional to 849.02, 1,273.32 and 502.20

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Solution

The fourth proportional to 849.02, 1,273.32 and 502.20 is: 753.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.02 : 1,273.32 = 502.20 : x
  2. Step 2: Convert to fraction form
    849.02/1,273.32 = 502.20/x
  3. Step 3: Cross multiply
    849.02x = 1,273.32 × 502.20
  4. Step 4: Simplify right side
    849.02x = 639,461.30
  5. Step 5: Solve for x
    x = 639,461.30/849.02
  6. Step 6: Final answer
    x = 753.18

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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.