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Finding the Fourth Proportional to 809.87, 1,117.59 and 460.52

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Solution

The fourth proportional to 809.87, 1,117.59 and 460.52 is: 635.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    809.87 : 1,117.59 = 460.52 : x
  2. Step 2: Convert to fraction form
    809.87/1,117.59 = 460.52/x
  3. Step 3: Cross multiply
    809.87x = 1,117.59 × 460.52
  4. Step 4: Simplify right side
    809.87x = 514,672.55
  5. Step 5: Solve for x
    x = 514,672.55/809.87
  6. Step 6: Final answer
    x = 635.50

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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.