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Finding the Fourth Proportional to 581.52, 868.02 and 505.02

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Solution

The fourth proportional to 581.52, 868.02 and 505.02 is: 753.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.52 : 868.02 = 505.02 : x
  2. Step 2: Convert to fraction form
    581.52/868.02 = 505.02/x
  3. Step 3: Cross multiply
    581.52x = 868.02 × 505.02
  4. Step 4: Simplify right side
    581.52x = 438,367.46
  5. Step 5: Solve for x
    x = 438,367.46/581.52
  6. Step 6: Final answer
    x = 753.83

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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.