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Finding the Fourth Proportional to 534.87, 801.77 and 210.47

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Solution

The fourth proportional to 534.87, 801.77 and 210.47 is: 315.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.87 : 801.77 = 210.47 : x
  2. Step 2: Convert to fraction form
    534.87/801.77 = 210.47/x
  3. Step 3: Cross multiply
    534.87x = 801.77 × 210.47
  4. Step 4: Simplify right side
    534.87x = 168,743.47
  5. Step 5: Solve for x
    x = 168,743.47/534.87
  6. Step 6: Final answer
    x = 315.49

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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.