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Finding the Fourth Proportional to 502.58, 752.91 and 285.50

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Solution

The fourth proportional to 502.58, 752.91 and 285.50 is: 427.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.58 : 752.91 = 285.50 : x
  2. Step 2: Convert to fraction form
    502.58/752.91 = 285.50/x
  3. Step 3: Cross multiply
    502.58x = 752.91 × 285.50
  4. Step 4: Simplify right side
    502.58x = 214,952.04
  5. Step 5: Solve for x
    x = 214,952.04/502.58
  6. Step 6: Final answer
    x = 427.70

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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.