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Finding the Fourth Proportional to 652.27, 899.95 and 419.53

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Solution

The fourth proportional to 652.27, 899.95 and 419.53 is: 578.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.27 : 899.95 = 419.53 : x
  2. Step 2: Convert to fraction form
    652.27/899.95 = 419.53/x
  3. Step 3: Cross multiply
    652.27x = 899.95 × 419.53
  4. Step 4: Simplify right side
    652.27x = 377,556.02
  5. Step 5: Solve for x
    x = 377,556.02/652.27
  6. Step 6: Final answer
    x = 578.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.