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Finding the Fourth Proportional to 602.18, 899.04 and 515.54

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Solution

The fourth proportional to 602.18, 899.04 and 515.54 is: 769.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.18 : 899.04 = 515.54 : x
  2. Step 2: Convert to fraction form
    602.18/899.04 = 515.54/x
  3. Step 3: Cross multiply
    602.18x = 899.04 × 515.54
  4. Step 4: Simplify right side
    602.18x = 463,491.08
  5. Step 5: Solve for x
    x = 463,491.08/602.18
  6. Step 6: Final answer
    x = 769.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.