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Finding the Fourth Proportional to 545.02, 816.99 and 288.52

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Solution

The fourth proportional to 545.02, 816.99 and 288.52 is: 432.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.02 : 816.99 = 288.52 : x
  2. Step 2: Convert to fraction form
    545.02/816.99 = 288.52/x
  3. Step 3: Cross multiply
    545.02x = 816.99 × 288.52
  4. Step 4: Simplify right side
    545.02x = 235,717.95
  5. Step 5: Solve for x
    x = 235,717.95/545.02
  6. Step 6: Final answer
    x = 432.49

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Similar ratio
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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.