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Finding the Fourth Proportional to 579.90, 865.45 and 532.66

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Solution

The fourth proportional to 579.90, 865.45 and 532.66 is: 794.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.90 : 865.45 = 532.66 : x
  2. Step 2: Convert to fraction form
    579.90/865.45 = 532.66/x
  3. Step 3: Cross multiply
    579.90x = 865.45 × 532.66
  4. Step 4: Simplify right side
    579.90x = 460,990.60
  5. Step 5: Solve for x
    x = 460,990.60/579.90
  6. Step 6: Final answer
    x = 794.95

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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.