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Finding the Fourth Proportional to 620.53, 928.87 and 574.76

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Solution

The fourth proportional to 620.53, 928.87 and 574.76 is: 860.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.53 : 928.87 = 574.76 : x
  2. Step 2: Convert to fraction form
    620.53/928.87 = 574.76/x
  3. Step 3: Cross multiply
    620.53x = 928.87 × 574.76
  4. Step 4: Simplify right side
    620.53x = 533,878.21
  5. Step 5: Solve for x
    x = 533,878.21/620.53
  6. Step 6: Final answer
    x = 860.36

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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.