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Finding the Fourth Proportional to 616.01, 849.41 and 557.69

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Solution

The fourth proportional to 616.01, 849.41 and 557.69 is: 768.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.01 : 849.41 = 557.69 : x
  2. Step 2: Convert to fraction form
    616.01/849.41 = 557.69/x
  3. Step 3: Cross multiply
    616.01x = 849.41 × 557.69
  4. Step 4: Simplify right side
    616.01x = 473,700.43
  5. Step 5: Solve for x
    x = 473,700.43/616.01
  6. Step 6: Final answer
    x = 768.99

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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.