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Finding the Fourth Proportional to 806.72, 1,113.23 and 507.62

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Solution

The fourth proportional to 806.72, 1,113.23 and 507.62 is: 700.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    806.72 : 1,113.23 = 507.62 : x
  2. Step 2: Convert to fraction form
    806.72/1,113.23 = 507.62/x
  3. Step 3: Cross multiply
    806.72x = 1,113.23 × 507.62
  4. Step 4: Simplify right side
    806.72x = 565,089.71
  5. Step 5: Solve for x
    x = 565,089.71/806.72
  6. Step 6: Final answer
    x = 700.48

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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.