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Finding the Fourth Proportional to 621.48, 928.25 and 535.08

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Solution

The fourth proportional to 621.48, 928.25 and 535.08 is: 799.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.48 : 928.25 = 535.08 : x
  2. Step 2: Convert to fraction form
    621.48/928.25 = 535.08/x
  3. Step 3: Cross multiply
    621.48x = 928.25 × 535.08
  4. Step 4: Simplify right side
    621.48x = 496,688.01
  5. Step 5: Solve for x
    x = 496,688.01/621.48
  6. Step 6: Final answer
    x = 799.20

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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.