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Finding the Fourth Proportional to 603.34, 900.72 and 515.75

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Solution

The fourth proportional to 603.34, 900.72 and 515.75 is: 769.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.34 : 900.72 = 515.75 : x
  2. Step 2: Convert to fraction form
    603.34/900.72 = 515.75/x
  3. Step 3: Cross multiply
    603.34x = 900.72 × 515.75
  4. Step 4: Simplify right side
    603.34x = 464,541.84
  5. Step 5: Solve for x
    x = 464,541.84/603.34
  6. Step 6: Final answer
    x = 769.95

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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.