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Finding the Fourth Proportional to 620.55, 930.33 and 534.89

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Solution

The fourth proportional to 620.55, 930.33 and 534.89 is: 801.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.55 : 930.33 = 534.89 : x
  2. Step 2: Convert to fraction form
    620.55/930.33 = 534.89/x
  3. Step 3: Cross multiply
    620.55x = 930.33 × 534.89
  4. Step 4: Simplify right side
    620.55x = 497,624.21
  5. Step 5: Solve for x
    x = 497,624.21/620.55
  6. Step 6: Final answer
    x = 801.91

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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.