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Finding the Fourth Proportional to 510.99, 766.56 and 202.84

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Solution

The fourth proportional to 510.99, 766.56 and 202.84 is: 304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.99 : 766.56 = 202.84 : x
  2. Step 2: Convert to fraction form
    510.99/766.56 = 202.84/x
  3. Step 3: Cross multiply
    510.99x = 766.56 × 202.84
  4. Step 4: Simplify right side
    510.99x = 155,490.75
  5. Step 5: Solve for x
    x = 155,490.75/510.99
  6. Step 6: Final answer
    x = 304.30

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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.