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Finding the Fourth Proportional to 603.16, 903.31 and 515.99

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Solution

The fourth proportional to 603.16, 903.31 and 515.99 is: 772.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.16 : 903.31 = 515.99 : x
  2. Step 2: Convert to fraction form
    603.16/903.31 = 515.99/x
  3. Step 3: Cross multiply
    603.16x = 903.31 × 515.99
  4. Step 4: Simplify right side
    603.16x = 466,099.90
  5. Step 5: Solve for x
    x = 466,099.90/603.16
  6. Step 6: Final answer
    x = 772.77

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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.