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Finding the Fourth Proportional to 803.36, 1,107.90 and 508.12

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Solution

The fourth proportional to 803.36, 1,107.90 and 508.12 is: 700.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    803.36 : 1,107.90 = 508.12 : x
  2. Step 2: Convert to fraction form
    803.36/1,107.90 = 508.12/x
  3. Step 3: Cross multiply
    803.36x = 1,107.90 × 508.12
  4. Step 4: Simplify right side
    803.36x = 562,943.38
  5. Step 5: Solve for x
    x = 562,943.38/803.36
  6. Step 6: Final answer
    x = 700.73

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1.5x scale

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.